Swinging your dumbbells – momentum vs. controlled motion
Using momentum to lift weights is a common mistake that’ll have you thinking that the weight exercise is so incredibly easy. Now slow it down to 2 counts while lifting and 4 counts while dropping. You’ll find that slower reps are tougher and tense your muscles a lot more. Simple talk? You’ll get better results. An even better technique is engaging your stomach by keeping it taut, then lifting while breathing out and dropping while breathing in long and deep.