"Doja Cat's Go-To Exercise: Squats for a Killer Booty!" If you're really looking to tone your lower body like Doja Cat, the singer and rapper recommends incorporating squats into your workout routine. According to Doja, she loves doing squats because they give her immediate results and help to shape her lower half. While she may struggle with arm exercises, Doja has found success with squats and recommends giving them a try.