I am not a big fan of stimulant based pre-workouts (beyond caffeine) because of the nervous jitters I experience, along with the fact I quickly build-up a tolerance. Additionally, many are lacking basic pre-workout ingredients and mask low-levels of product under a "Proprietary Blend" matrix. With Pre JYM ,I know exactly what I'm getting and in the exact doses....there is no guesswork involved. I don't need to stack Pre JYM with some of this, some of that, and a bunch of other guesswork ingredients since I'm not sure what's in most pre-workout supplements other than a boatload of stimulants...some of them potential dangerous or little studied.

Pre JYM gave me everything I needed nutritionally to experience solid workouts with good energy, excellent focus and strength, and great sleeve-tearing pumps; I feel as though I am having a very good day at the gym without feeling like I am hopped-up on drugs. My energy, strength and mental focus simply coalesce into an outstanding workout with a very natural feel to it. Moreover, while I often have the energy to workout for another hour, I retain the ability to realize that I have met or exceeded my workout objectives (e.g., chest, triceps and obliques) in 70-minutes of very intense training, and to continue would be counter-productive since I tend to over-train when taking other PWOs.

Overall, I am very please with Pre Jym since it helps get me energized and motivated to workout, provides me with the nutrition I need to fuel gains in the gym, and does not interfere (e.g., post-workout crash and measuring a cornucopia of supplements so I know what I am taking). After all, I'm just a normal hard-working guy trying to stay in shape without this routine/lifestyle--call it what you wish--consuming all my limited free-time. As far as negatives, Pre JYM is not the best tasting pre-workout on the market. Then again, it mixes well and all the flavors taste pretty good and, considering how many bitter tasting ingredients in contains, it's quire remarkable how good they taste.

Great product, tastes great!

Best pre workout I've tried hands down. Been using it for a year now and I won't use anything else. I used C4 and others before and it would wreck my stomach pre workout. This stuff is clean and Jim stoppani gives unlimited tips on social media on how best to mix and use the stuff. Might seem pricey but you get what you pay for, scoop size is huge! The natural island punch isn't for everyone due to the use of the natural sweetener Stevia. If you use Stevia then go for it, it's like a tart tang but I'm not a fan of aritifical sweetness so this is perfect for my lifestyle. Enjoy!

Another home run. Great by itself, but unbeatable when you use it along side the Post.

This is a GREAT pre workout. Fully dosed and listed ingredients no hiding behind proprietary blends. Not only does it give great PUMP, energy and focus, but also feeds your muscles with BCAA's. I actually prefer the natural island punch flavor because it is not too sweet and a little tart. I would highly recommend using this pre-workout.

checkout www.jimstoppani.com

I've been taking most of jym products for 3 years. Some taste good, others are not as good. I don't rate products based on taste. I rate products especially pre workouts based on effectiveness. Pre-jym is the most effective pre workout I've tried. It gives me energy at the beginning of my workout but as I warm up early in my workout I feel it's ignited. I have endurance to push myself through lifting, hiits, tabatas etc...

Best prework out I ever tried! I saw 1-2 extra reps in fundamental exercises. Great focus, intense clarity, noticeable pump. Regardless high caffeine concentration and rest of stimulating matrix, it gets out of the system shortly after workout completion, therefore you can still a get a good night sleep after a late evening workout. 6 g of citrulline combined with 2g of HCL creatine are a game changer. I would buy it again for sure!

No crash with minimal jitters. I like the concept of the creators products - natural ingredients. The flavor "island punch" is mildly sweet. I will try other flavors for this is my first purchase. If you purchase Jym protein powder, Tahitian vanilla bean tastes amazing.

Pre Jym is the absolute best Pre workout ever. Best tasting as well.

Gave it 3 stars because I had accidentally bought the wrong flavor. Natural island punch was what I clicked and it is horrible, however I didn't notice the mistake till after I opened it then I figured I was too late to send back. I normall get the cherry or watermelon flavors which are amazing. I love this product, just not the natural island fruit punch flavoring.

Excellent product! Clean concentrated workout! I don't feel the shakes all day with this pre work out, you can definitely tell it is a clean product without all the additives

Pre jym gives me the focus and energy that I need for my workout I do not get sluggish or have a tingling sensation like I have from other pre workouts

I've purchased Pre Jym in the past when it was sold on Bodybuilding.com in packets. I just went back to the gym and wanted to start with the product again. I read all about the controversy and decided to order from GNC to support Jim Stoppani. I order the Natural Island Punch Pre Jym and Lemonade Post Jym. When I tried the island punch flavor for the first time, I almost vomited. I was SHOCKED that someone thought this tasted good. I tried a lot of supplements in my day and this by far is the worse tasting supplement I've ever tasted. Luckily, I was able to return it to my local GNC for a different flavor.

I would consider this pre workout one of the best one the market. It has a great taste and will push you and keep you focused through your training session

Great product. Science based and efficient. You will not get a buzz off this product. The different ingredients do what they are supposed to. Increased concentration, alertness and muscle pump. Jim Stoppanni is straight forward in allowing the customer know exactly what they are consuming.

Best Preworkout on the Market. Helps with fatigue during workouts so much. Absolutely love it! Plus the Black Cherry and the Refreshing Melon are delicious!

Simply the best Pre-workout formula on the market!

Best tasting pre workout supplement. That is secondary compared to the focus and energy I get taking. Now I'm 63 years old so obviously I don't train like I used to but I rest a bear minimum between sets so my cardio vascular workout is fast efficient 75 minutes and I know I get a fabulous workout always perform perfect repetitions to avoid injury and further damage of the rotary cuff.

Black Cherry is amazing, not too sweet, not too sour, just right. Love the way it reacts for my lifts, get an excellent pump, a great sweat, and have made significant gains in lifting.

I have tried a lot of different pre-workouts but this one the flavor was so bad I could not finish drinking it. On another note I don't know how well this works since I could not even drink the full amount.

Works great, not a huge fan of the flavor. Still getting use to the caffeine as I have never consumed that much caffeine before, but works really well. My workouts are strong and I am seeing results.

Delicious flavor. I only take half a scoop and Love the energy. I have great workouts and energy that lasts for hours.

Been using jym products for two years never thought bout switching to something else I have used samples of other pre workouts when I'm out of jym but it reassures the reason to stick with pre jym

Great flavor mixes well I feel the boost of energy

Best tasting pre-workout bar none! Mixes well with the protein. Great results as well

I've been taking supplements for 18 years now..been looking for a pre work that doesn't give you the jitters and good energy and pump, this has all that, no crash..I took half a scoop btw..that was enough for me.

Hard to find better ingredients in a pre-workout. Doesn't give me as much of a tingling sensation like other pre-workouts but overall I find I have much more endurance for longer workouts with this product. This is Jim Stoppani's official pre-workout offered only with GNC. The one on bodybuilding.com is being produced unauthorized! Scary! How is that even legal!?!

All of JYM products are very good. Effective and great taste. Check out Jim's posts on any social media.

I have tried a few different pre-workout drink powders. This is by far the best! The refreshing melon is delicious. I've noticed a good amount of increased energy without the jitters. I refuse to workout without it!

The Black Cherry and Strawberry Kiwi are a little sweet, but flavored well. The Island Citrus flavor caught me off guard - I thought it would be like a fruit punch but it's pineapple, so not sweet. After a few rounds of it, I really grew to like it. The beta-alanine leaves a nice buzz in my face and I'm all charged up for weights and cardio. Can't imagine a workout with my Pre Jym now!

I have bought Jym products for the past couple of years and the natural punch flavor does not taste good -

I'm not sure if there's any other pre-workout out there that uses clinical study based doses, but the results & feel are apparent. My favorite pre-workout of all time.

I love this stuff before I workout, and it gives me some solid reps, but the flavor is a bit hard on my stomach. The black cherry was manageable, but the tropic fruit one I bought was sour and unexpected causing me to throw up twice in two different workouts because it left a bad taste in my mouth. However, if you buy a flavor I recommend Black Cherry, I'm going to try the kiwi one next.

This is a great pre-workout and Jim Stoppani is the man! Great ingredients and proper dosing are key and this pre-workout gets it right. Highly recommend his workout programs on Bodybuilding.com although don't buy this from Bodybuilding.com as they are selling an unauthorized older version of this (as they are currently in a lawsuit against each other)! I use this for most of my regular workouts (1-2 hours with cardio and weight training). I prefer C4 for quicker workouts (30 minutes to 1 hour) and Performix for longer workouts (2-3 hours+).

I switched to jym pre workout because I was tired of feeling like a crack addict when on other pre workouts! I hated the jitters, the itching, the HR spike! A store employee recommended jym to me and I'm glad she did! Instead of providing a sugar spike like other pre workouts, Jym fuels your body with the supplements you need to have a killer workout, WITHOUT THOSE UNNECESSARY JITTERS! I've had my absolute BEST workouts taking Jym! The larger tub lasts a quality amount of time, even though the scoop is pretty big compared to other pre workout servings. 10/10 would recommend! P.s. black cherry is the way to go!

Most people aren't educated on supplements, and especially pre-workouts. Most people think pwo is supposed to get you super jacked up and jittery and shaky. This product does not do this. What it DOES DO is provide all of the ingredients you need at the proper doses (along with Post-Jym). You will see increases in muscle strength and endurance, and you will experience extended endurance for an entire workout. I usually lift and then do cardio, and even when I'm done with my cardio I still feel like I can do more. You will also be more focused. I was taking a math test before, got stuck on a problem, started sipping pre-jym and in about 5 minutes I remembered how to do it and ended up with an A on the test. This happened TWICE. It's the real deal, just give it a shot. Measure the scoop (25g) with 21-24 oz of water, that gives the best taste

The product as a pre-workout: great!

Definitely gets me pumped before my workout. No jitters, a little bit of tingling in the extremities, increased focus and motivation, increased energy (for both weight lifting and cardio).

The product flavor: alright.

I've tasted a lot of really NASTY pre-workouts, this one beats most of them. Although, if you take the full scoop and recommended amount of water, the flavor is strong.

I'd definitely recommend trying this one!

I actually like the Natural Island Punch because it's not sickly sweet like most preworkouts on the market these days. There are enough artificial sweeteners in everything else that I appreciate the lack of them here, and since I mix PreJYM with ProJYM as my preworkout drink, the tartness of the Natural Island Punch balances out the sweetness from the Pro. PreJYM in general is the best -- all of the power and endurance benefits of a PWO without the crash that many PWOs have due to excessive stimulants. Pay attention to the amount of water it recommends and consider mixing as well.

Horrible taste. Good pump. Get Strawberry Kiwi. You're Welcome.

I love the Natural Island Punch! I like that it is not as sweet as some of the others. Always have great energy and focus when I use PreJYM before my workout.

the flavor of island punch was very bad :(

i always pay from jim stophani but the new product is all problems was from the teast :(

Great pre workout. Tons of energy and no jitters.............................

I drink a pre workout every day and its nice to have something WITHOUT artificial colors and sweeteners.. With a pre with this many ingredients, its amazing...

The pre jym strawberry kiwi was awesome, the taste was great, as well I had intense focus, some times I would take it 10 mins before my workout and sip on the rest through my workout, maintained focus as well as delivered pumps which lasted even after my workout... I just put in my order the watermelon pre jym can't wait to try it..

Great pre-workout in terms of the kick that it provides as well as enhanced focused post-workout. Taste is a little grainy.

I will try to be positive about new jym.

I got one jar 50% off , so that was fair. I train 6 days a week , I do my best for promoting GNC products. ACG3 is a much better product with extra 30 serves. The taste was alright but didnt feel like a machine doing my workout and then had a massive crash which is never nice. No pump and was disappointed because Jim has been telling us its a better product. I will go back to ACG3 with extra serves and more value for money. Jim is a Great knowledgeable man, but thumbs down for me. Try ACG3 or Performix .

Plain tasting, like medicine taste, needs alot more flavor tasting

No pump after workout and then huge crash

Extremely disappointed with this product, I can't recommend, look elsewhere

GNC is terrible at shipping. I am still waiting on my order from 2 weeks ago.