How many times have we heard that to burn fat and rev up our metabolism, we need to suffer? Think about burpees, endless jumping jacks, high-impact classes where your knees feel like they're ready to ...

Take this 30-second pushup test to see if your upper-body strength and endurance are years younger than your actual age.

"For Under Armour, this moment is about discipline and focus on the core UA brand during a critical stage of our turnaround," founder and Chief Executive Kevin Plank said in a statement. "And for ...