Regular exercise supports immune health by improving the circulation of your immune cells and reducing inflammation, but overtraining may weaken defenses.

Endurance exercise means long duration or long distance cardio. ("Long", like "heavy", is relative. Let's say 20 minutes or longer.) My preferred endurance exercise is running, but you could do ...

Zone 2 training is cardio done at a steady, low intensity. It has benefits for aerobic training (so you can run faster), anaerobic training (helping you to recover faster between reps and sets, or ...