When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Let’s be honest, you can’t get a more simple, yet effective, exercise for ...

They make it look so easy, don’t they? Endurance athletes such as ultramarathoners (runners tackling anything 50 km, aka 31 miles, and above) seem to sail smoothly beyond limitations of flesh and bone ...

You’ve definitely felt it before: that mid-sprint twinge in your calf, the ache in your shoulders after a heavy lift, the stiffness in your elbow the day after tossing a ball around. Not quite an ...