Build big arms and back muscles with this 5-minute pull up workout

Pull-ups are notoriously hard to master. It's a shame as this compound exercise is one of the most straightforward and essential workouts you can do to improve muscle definition, increase arm gir

Pull-Up Techniques for Everyone - The New York Times

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Sculpt six-pack abs with this quick 4-move core workout – no equipment required

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5 Lat Exercises for Explosive Back Development - Muscle & Fitness

Work the glutes, quads and calves with this 5-move leg day workout – you'll only need 2 dumbbell