Muscle & Athletic Performance
23 products graded for this goal, sorted by strength of evidence.
This is the category with the clearest evidence hierarchy on the entire site. Creatine monohydrate and whey protein are about as well-established as sports supplements get — decades of RCTs on strength, power output, and muscle protein synthesis, with well-characterized dosing. Beta-alanine and citrulline malate have solid evidence for specific performance domains — buffering capacity for high-intensity efforts, blood flow for citrulline — backed by consistent trial results. Electrolyte blends matter primarily for endurance or heavy-sweat scenarios, not for someone doing a 30-minute lift. Below that tier, things get thinner: betaine and boron have some human performance data but smaller and less consistent than the top tier. Fadogia agrestis and tongkat ali are marketed heavily around testosterone, but human trial evidence, especially for fadogia, is minimal and mostly unpublished or animal-based; treat those claims with real skepticism. Cold plunge and red light therapy show up for recovery, with cold exposure's effect on adaptation being more nuanced than 'always good' — some evidence suggests it can blunt muscle-building adaptations if used immediately after strength training.
Common questions
What supplements actually build muscle?
Creatine monohydrate and adequate protein intake, whey or otherwise, have by far the strongest evidence for muscle strength and size gains. Most other supplements on this page are performance or recovery aids around that foundation, not muscle-builders themselves.
Does fadogia agrestis actually raise testosterone?
The human evidence is very thin — most claims trace back to animal studies or unpublished, informal data. This is one of the more speculative entries on the site; skepticism is warranted.
Is cold plunging good for muscle recovery?
It depends on timing. Cold exposure can reduce soreness and perceived recovery time, but some research suggests using it immediately after strength training may blunt long-term muscle adaptations — timing it away from lifting sessions is the more evidence-aligned approach.
Does creatine cause water retention or bloating?
Some initial water retention in muscle tissue is common and expected — it's part of how creatine increases cell volume — but this is different from the diffuse bloating some people worry about, and it typically stabilizes within a couple weeks.
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Medical disclaimer. The information on this site is provided for educational purposes only and is not intended as medical advice. It does not constitute a diagnosis, treatment plan, or recommendation for any specific health condition. Always consult a qualified healthcare professional before making changes to your supplement regimen, diet, or lifestyle — especially if you are pregnant, nursing, taking medications, or managing a medical condition.
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