The Journal
Research, in plain language.
What the studies say about collagen, creatine, sleep and labels, with the limits stated.
Latest / Oct 3, 2026
Why creatine leaves grit at the bottom of your glass
Creatine monohydrate dissolves poorly in cold water. The numbers behind the grit, whether it matters, and how to fix it.
Read the article200 mg or 24 mg? How to read magnesium on a supplement label
Why a label can list 200 mg of magnesium bisglycinate and 24 mg of magnesium, how much magnesium adults need, and how to add it up.
Oct 3, 2026 · 3 minReadCollagen vs whey protein: what's actually different
Whey is a complete protein rich in leucine. Collagen lacks tryptophan and is low in leucine. Here is what that means and how blends handle it.
Oct 3, 2026 · 3 minReadProtein powder at night without melatonin: what to check on the label
Many nighttime protein powders add melatonin or herbal ingredients. Here is what to check on the label, and what is in RENYX™ Night Recovery Protein.
Oct 3, 2026 · 3 minReadHow to read a recovery powder label: 6 things to check
Six practical checks for reading any protein or recovery powder label before you buy.
Oct 3, 2026 · 2 minReadTart cherry, L-theanine and magnesium for sleep: what the research does and doesn't show
A careful look at the small trials behind tart cherry, L-theanine and magnesium for sleep, with study sizes, doses and limits.
Oct 3, 2026 · 3 minReadDoes collagen help with muscle soreness? What the research shows
A plain-language look at what randomized trials say about collagen peptides and exercise soreness, including the limits of the evidence.
Oct 3, 2026 · 3 minRead