During the best runs, you hit your stride and cruise at a sustainable pace on fresh legs for as long as you planned. When fatigue hits, it’s the polar opposite: every step forward feels like a battle.

A hockey bench is a pounding heart, pumping out players to all corners of the 200-foot rink, revitalizing and fortifying while play continues. Line changes are practiced and usually second nature to ...

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Add Yahoo as a preferred source to see more of our stories on Google. If your legs often feel sore and tired, it could be a sign of peripheral artery disease (PAD). This disease is caused by a ...