There is no magical rep range when it comes to blasting fat and building muscle. What you have to do it keep your body guessing. This boosts your fat burning potential and helps you bust through plateaus. Switching between higher volume and higher intensity is the key!
Try this out for fat burning magic…Do fifteen-twenty reps per exercise using a lighter weight for four weeks, then switch to eight to twelve reps per exercise using a heavier weight for the next four weeks. Then just continue alternating the cycle every four weeks. This will do a little bit of muscle confusion, keeping your body guessing and most importantly burning fat!