Even getting to the gym can be a struggle when family members are in town and work holiday parties are taking up every spare after-office moment. Instead of slogging it out on the treadmill for 20 minutes before heading to the weight bench, surround each set of reps with a blast of cardio like jumping rope, jumping jacks, quick springts, or burpees.

Do it Today: Make the most of your workout time today at the gym by combining cardio and strength training to rev up metabolism and build muscle.

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