January feels rough for real biological reasons, but the science on depression and suicide rates might surprise you. Here's what the data actually shows.
A1C levels have a surprising upper limit, and one case pushed it to the extreme. Here's what the highest recorded reading actually means for blood sugar and health.
CPR certification requirements vary by profession. Learn how often nurses, teachers, lifeguards, and others need to renew, plus tips for staying sharp between training.
Eye exercises like pencil pushups and saccade drills can genuinely improve eye coordination and reduce fatigue, though they won't correct vision problems like nearsightedness.