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Jillian Michaels doesn't mess around in the gym [2]. As her latest Instagram video proves, she puts in work, especially on glute day. The tough-love trainer, who now has her own fitness app called My Fitness by Jillian Michaels [3], showed off four moves for booty gains [4], all of which will set your glutes on fire.

Her moves included:

• Reverse leg lifts on the squat rack
• Side leg presses on the seated leg press machine
• Leg press to jump squat on the seated leg press machine
• Single-leg leg presses on the leg press machine

If you're looking to mix up your lower-body workout, then incorporate these moves into glute day. You'll feel the burn right away and see booty gains in no time!