Molecule linked to muscle fatigue in humans; enhances exercise tolerance when fed to mice

Everyone’s muscles have different limits. While professional athletes can train for hours before feeling fatigued, others struggle to mow the lawn or climb stairs.

Caffeine consumed 6 hours before bedtime reduced sleep by more than 1 hour

A new study shows that caffeine consumption even six hours before bedtime can have significant, disruptive effects on sleep.”Sleep specialists have always suspected that caffeine can disrupt sleep long after it is consumed,” said American Academy of Sleep Medicine President M. Safwan Badr, MD.