Shake up your workout routine and try this fun hybrid workout led by Lisa Corsello [1], which mixes cardio, Pilates, and strength training. The killer combination of exercises not only raises your heart rate — thank you, plyometrics — but fusing classic Pilates moves with traditional strength training also means your entire body will be worked. Modifications are provided for all levels, and for an extra burn, add a pair of medium free weights.

If your fitness goals include a flatter belly and stronger core, you're going to need a solid plan, expert guidance, and a little outside motivation. Our 30 Days to a Flat Belly [2] plan has all three! This comprehensive workout plan will give you results you want without a pricey gym membership; you can do these workouts anywhere — and they're all 30 minutes or less.

Credits: On Anna: Body Glove top [3] and Body Language Sportswear tights [4]. On Lisa: Athleta [5]. On Christina: Gymshark top [6] and K-Deer leggings [7]. Anna and Christina's mats: Vagabond Goods [8]. Lisa's mat: Yeti Yoga [9]. Corkcicle water bottles [10].