TOP 20 Supplements for the GYM (from worst to best)

The video introduces the topic of fitness supplements and states that Adrián di Arrua, a doctor in physiology and formulator, will rank the 20 most popular supplements. The ranking criteria include scientific evidence, popularity, cost, accessibility, and potential side effects. He also mentions Fit Generation's courses on sports supplementation.

This section covers supplements with little to no scientific evidence for their marketed claims. Tribulus Terrestris (00:01:34) is ineffective for testosterone increase but helps libido. Conjugated Linoleic Acid (CLA) (00:02:09) shows no solid results for fat loss in humans. Chromium Picolinate (00:02:30) lacks strong evidence for fat loss, though it might improve insulin sensitivity and reduce appetite in overweight individuals. BCAAs (00:02:57) are not effective for muscle building or recovery when used in isolation, as all essential amino acids are needed.

This category includes supplements with some or ambiguous evidence. L-tyrosine (00:03:43) is not proven to aid fat loss. ZMA (00:04:16) (zinc, magnesium, vitamin B6) benefits are mainly from magnesium, and deficiencies are rare with a varied diet, making it generally unnecessary for most. Glutamine (00:05:04) is absorbed by intestinal and liver cells, not muscle cells, and does not significantly improve muscle recovery or performance. Arginine (00:06:11) has limited benefits for performance due to splanchnic sequestration, meaning much of it is retained in the intestines or liver rather than reaching muscle tissue.

These supplements show some positive, though often modest or inconsistent, effects. Citrulline malate (00:06:47) may help delay fatigue and increase time to exhaustion, but evidence is ambiguous and effects are small. L-carnitine (00:07:16) helps transport fatty acids for energy, but its effect on fat loss is modest and protocols need to be optimized (e.g., consumed with an insulin spike). Ecdysterone (00:08:08) may directly help gain muscle mass by increasing protein synthesis, is safe, legal, and without significant side effects, though its effect is moderate. Synephrine (00:08:42) can aid fat loss by activating beta3 adrenergic receptors, facilitating lipolysis and fatty acid oxidation, but caloric deficit remains key.

This section introduces supplements with good evidence for specific benefits. HMB (00:09:40) helps minimize muscle loss during periods of inactivity and may aid muscle gain in beginners, elderly, or those in overreaching states. Sodium bicarbonate (00:10:21) effectively improves performance in resistance sports by buffering muscular acidosis, though less effective for strength sports. Ashwagandha (00:10:55) is an adaptogen that helps reduce chronic stress and anxiety, potentially improving recovery and reducing fatigue. Green tea extract (00:11:21) increases energy expenditure, lipid oxidation, insulin sensitivity, and can decrease appetite. Protein powder (00:11:39) is a very good supplement that provides essential proteins for muscle repair and rebuilding, recognized by the Australian Institute of Sport for its safety and strong evidence, making it widely popular.

The top-tier supplements with the most robust scientific evidence. Beta-alanine (00:12:47) improves performance in high-intensity, moderate-duration activities by increasing carnosine levels and buffering muscular acidosis, thereby delaying fatigue. Caffeine (00:13:12) is highly studied and shows benefits in athletic performance (endurance, strength, speed, power), cognitive performance, and body composition (fat loss in a caloric deficit). Creatine (00:13:42) is considered the best supplement with extensive scientific evidence for improving athletic performance, body composition, and overall health across various populations. It is well-tolerated at recommended doses (5g/day or 0.8-1g per 10kg body weight).

The video concludes by reiterating the importance of choosing supplements based on objective evaluation, considering positive and negative aspects, cost-benefit ratio, and ensuring quality supplementation with proper concentration and standardization. No supplement is essential, but some can be very useful depending on individual goals and contexts.