"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When life gets busy, it can be hard to squeeze in an endorphin-boosting workout each day (no shame!).

Transform your home into a full-body training zone! This 20-minute dumbbell workout hits all your muscles with zero ...

In 1975 the US Military Academy ran a joint project with Nautilus and Arthur Jones, published as ' Total Conditioning: A Case ...

If you have less than 20 minutes, you have all the time you need to get toned from head to toe with this total body dumbbell workout from the Women’s Health+ Ultimate HIIT Challenge. Today's exercise ...

When you don’t have time, or limited home gym equipment, working out can feel like a waste of time. But, we all know ‘the only bad workout is the one you didn’t do’, and this full-body workout isn’t ...