Choose your favourite cardio exercises like spinning, outdoor biking, running, hill sprints, or swimming, whatever it is, hit it hard. Literally! Experts advise to perform HIIT, high-intensity interval training, to burn fat in a time-efficient manner. A 3-to-1 rest-to-work ratio is effective. It means you can, for example, go hard as you can on a hill sprint for 30 seconds, walk or jog back down the slope for 90 seconds, and repeat four times for an intense 10-minute training session.

Lindsay Cappotelli ensures she's consistently making progress by simply tracking her workouts online or in a training journal. "I like to log the exercises I performed, the weight lifted, the reps done, and the rest I've taken between sets, so I always know where I stand," she explains. "Since muscles growth is a constant challenge, I'll mix up my workouts by adding more weight, decreasing the rest between sets, or adding an additional rep or two."

Liz Neporent, an exercise physiologist and the president of Wellness 360, a New York City-based corporate-wellness-consulting company, suggests the following seven exercises, which work most of the major muscles in your body. Do one to three sets of 8 to 15 repetitions of the exercises, resting no more than 45 seconds between sets to keep the workout challenging.
After session 12, consider whether you need to increase the weight for any particular exercise. If you can comfortably do more than the RM of 12 exercises, increase the weight by a modest amount, say two pounds or a kilogram for isolation exercise muscles such as triceps and biceps, and 5 pounds or 2.5.kilograms for compound and large muscle group exercises like squats and deadlifts. When using dumbbells, this would apply to each one. Don’t increase the number of sets beyond 3 at this time.