Warm up by running for 10 minutes on the treadmill, then move on to the circuits ahead. Do three sets of 15 reps of each exercise (unless otherwise noted), with a 45-second rest between moves. Complete one circuit in full before tackling the next. When you're finished, cool down with this head-to-toe stretch sequence.
Circuit 1:
Circuit 2:
Circuit 3:
Circuit 4:
- Plank (hold for 20 seconds for three rounds)
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Mountain climbers (do three 30-second rounds)
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Crunches (do three 30-second rounds)
Image Source: POPSUGAR Photography / Matthew Kelly