Squeeze and strengthen your core muscles in this 25-minute workout. In blocks 1 and 3, you’ll focus on working your abdominals with standing oblique crunches and side plank dips. In blocks 2 and 4 you’ll target your lower back and glute muscles with swimmers and clams. You’ll run through the exercises in each block twice and spend 40 seconds on each exercise:

Block 1 – standing cross over knee to toe taps, single leg Romanian deadlifts, and standing oblique crunches
Block 2 – donkey kicks and clams
Block 3 – dead bugs and side plank dips
Block 4 – reverse snow angels, swimmers, and superman W pulls.