To keep your heart rate up, try not to rest between exercises. Take 60 to 90 seconds rest between circuits.
Do push-ups for 60 seconds, squat jumps for 45 seconds, beast crawls for 30 seconds, and deadbugs for 15 seconds. Complete 3 sets.
Do lunges for 60 seconds, beast taps for 45 seconds, skaters for 30 seconds, and plank bird dog for 15 seconds. Complete 3 sets.