Kick off the new year with this cardio kickboxing workout from celebrity trainer Jeanette Jenkins [1]. Known as the Hollywood Trainer, Jeanette works with Pink and Alicia Keys [2], among others, and she's put together a workout that will have you sweaty and breathless but with a smile throughout. Jeanette has you covered with modifications for all levels provided by her trainers: Ashley Joi [3], Liz Holtz [4], and Beth Alexander [5]. Press play and get ready to torch calories!

Credits: On Jeanette: Nike tights and shoes [6]; On Ashley: Nike top and shoes [7] and Lorna Jane tights [8]; On Liz and Beth: LiCi Fit tights [9]; on Beth APL (Athletic Propulsion Labs) shoes [10]; Manduka Mats [11]