Is it bad to eat protein bars all the time? How much protein do we actually need? We asked a nutritionist and a sports dietician to weigh in ...

Some food combinations can inhibit nutrient absorption, while others can actually help. Here's what you need to know ...

Runner's World is the ultimate resource for runners of all levels, from beginners lacing up their first pair of running shoes to seasoned athletes chasing their next milestone. With decades of ...