The secret behind a good workout is simple. While fancy equipment and complicated exercises can be fun, when time and resources are tight, all you really need to stay fit is your body (and a set of dumbbells, if you want to kick things up a notch). The moves in this slideshow are simple and effective — and they can be done anywhere you are, whether it's a cramped apartment, a hotel room, on the beach, or — yep — even at a gym.
This article is your toolbox of essential at-home exercises, mixing both cardio and resistance moves. To make it extra-simple, we’ve broken it down into three categories: lower body, upper body, and core. When time is tight, alternate muscle groups on different days, and when you’re ready for a challenge, piggyback the sets for a total-body routine.