Pull-ups are one of the hardest body weight exercises to do. To get better at these, consistency and building the reps up slowly is important in managing progression. Mix up the different grips and hand widths, as these variations will help strengthen different muscles in your upper body. If it’s too challenging, use a TRX to mimic the pull-up movement. Sit on the floor, arms stretched and pointing upwards. Depress your shoulder blades, activate your lats and slowly pull yourself up from the floor, relying on your arms – not the legs – to dictate the movement.