Remove Thigh Gap from your vocabulary. The real name for your inner thighs are the hip adductors. They are made up of five muscles on the inside of the thigh: gracilis, obturator externus, adductor brevis, adductor longus and adductor magnus. Jenna Willis is Liza Koshy's personal trainer. She will show you how to work the thigh ... inside and out. check out the full workout on our channel!