Forget the gym—you can build strength all over in 30 minutes with just a set of dumbbells and these five moves

A man in shorts, t-shirts and sneakers performs a dumbbell workout on an exercise mat in a living room. He is doing a renegade row exercise on the floor, with his body held in a straight line from his heels to his shoulders. Both feet are on the floor and his left hand is holding a dumbbell on the ground for balance, while his right hand rows a dumbbell up towards his ribcage. In the background we see a sofa and plants and a large window framed by sweeping curtains.

Sandy Sklar is a certified trainer who's been setting workouts for more than 20 years, so she knows a thing or two about how to get results. Her sessions feature clever combinations of tried-and-tested moves, which target a wide range of muscles in a short space of time.

Her recent full-body session is a great example of her workout style. It only features five movements, but strengthens your chest, back, shoulders, legs, core and arms. All you need to do it is a pair of moderately heavy dumbbells.