Experts Recommend 400 mg Magnesium Glycinate for Sleep and Workout Recovery
Updated
Updated · British GQ · Jul 31
Experts Recommend 400 mg Magnesium Glycinate for Sleep and Workout Recovery
3 articles · Updated · British GQ · Jul 31
Summary
Magnesium glycinate emerged as experts’ top pick for sleep and post-workout recovery because it is highly bioavailable, gentler on the stomach, and linked to muscle relaxation, less cramping, and calmer nervous-system activity.
A 2021 study found even 1 night of poor sleep can impair muscle repair and growth, helping explain why clinicians favor magnesium over melatonin when recovery and sleep quality are both the goal.
Evidence remains mixed but supportive: a 2024 review of 960 magnesium studies found less muscle soreness and better exercise performance, while 5 of 8 sleep studies in a separate 2024 review reported benefits.
Most adults already get enough magnesium from food, experts said, with men generally advised to consume 320 to 400 milligrams daily; doses above 5,000 milligrams can be toxic.
Oral supplements are viewed as more reliable than topical products for whole-body effects, and pharmacists warned that magnesium is not FDA-approved as a supplement and can interact with antibiotics and blood-pressure drugs.