Swapping slow jogs for intervals and trading crunches for dead lifts are old news. If you want to lose weight and look gorgeous, look no further than the latest science

Do fewer reps - 15 ways to burn more fat - Women's Health & Fitness

1. Do fewer reps with heavier weights

Fewer reps with heavier weights equals a metabolic boost that outlives the increase from high rep, light weight workouts, according to the Norwegian University of Sport and Physical Education. To maximise the calories burned long after you and your gym bag have left the change room, shoot for three to seven reps.