Get ready to work out with fitness trainer Natalie White [1], who will be leading this 10-minute HIIT and strength workout joined by Dustin Ripkens [2] and Luisa Fonseca [3]. In this routine, you'll power through a series of squats, planks, quick feet, squats with side crunches, burpees, and so much more. Don't fret if it's a little too intense: White offers plenty of variations and modifications throughout this routine. In just 10 minutes, you'll complete the hardest HIIT workout yet. All you need is a mat to get started! (And don't forget your water bottle — you'll need it for this one.)

Don't miss new episodes of Class Fitsugar, now every Sunday on the POPSUGAR Fitness YouTube channel [4].

White's outfit: Alo Yoga, shoes: APL. Ripkens's top: Lululemon, shorts: Rhone, shoes: APL. Fonseca's outfit: Torrid, shoes: APL.