After a century of study, physicists have theories — but they’re still not 100% sure.

A creatine loading phase uses 20 to 25 grams daily for 5 to 7 days to quickly saturate muscle creatine stores, then shifts to 3 to 5 grams daily. Research suggests loading can raise muscle creatine ...

Sounds weird, I know.

A stressful lifestyle, busy schedule and lack of sleep are known to cause dark under-eye circles — but they aren’t the only possible reasons. Other factors such as genetics, dehydration and age, can ...