A trainer says you can work your entire body and build muscle with just a pair of light dumbbells and these four simple moves

A man performs a reverse weighted lunge in his living room. He wears shorts, t-shirts and sneakers and holds a pair of dumbbells in his hands, which hang by his sides. He's in the middle of a lunge, with his left leg behind him and left knee hovering just above the floor, and his right leg bent at a right angle in front of him. Behind him we can see a bookcase filled with decorative items and a television mounted on a brick wall.

I’m a personal trainer and one thing I always tell newcomers to strength training is that they need to build up their resistance slowly to avoid injury. That’s where light dumbbells can be useful.

Free weights are the first bit of fitness equipment I recommend that my personal training clients buy and if you invest in a lighter set it doesn’t mean you can’t get a good workout.