Interval training taps into both aerobic and anaerobic energy systems. Here's how intensity determines which one dominates and what that means for your fitness.
Bath salts are synthetic stimulant drugs with serious health risks, not the soothing crystals you add to a tub. Here's what they actually do to your brain and body.
Hospital delirium has real, identifiable causes — from infections and medications to poor sleep and sensory changes. Here's what raises the risk and how it can be prevented.