Equipment-free workouts are often a misnomer. Some actually require a yoga mat. You’ll be on the ground. Raise your hand if you want to dig your forearms and knees into a hardwood floor during planks ...

Start on all fours. Extend your right arm in front of you and your left leg behind, actively reaching in opposite directions.

Our reporters have teamed up with fitness experts to design dozens of routines. Try something new — and build an exercise ...