Climbing up sets of stairs is a natural part of life, but it's one that can easily leave you bent over and gasping for air. Even if you regularly work out, or maintain your endurance on fitness ...

Before starting any new activity, check in with your medical team for clearance. If you’ve never run before, start slow and with short distances. Alternating between walking and running is also a ...

How to make step-ups harder: Hold a light weight, like a dumbbell or kettlebell, in each hand as you perform the exercise. Increase the weight as you get stronger. Trainer tips: Keep your hips square ...