1. "Instead of running or biking at a steady pace, add in a few intervals where you alternate high intensity routines with moderate recovery periods (So, if you are running for 30 minutes, add in at least three sprints for 30 seconds). This helps you push past plateaus to get your heart rate up and burn more calories." — David Kirsch, a personal trainer and wellness expert in NYC and founder of Madison Square Club gym and David Kirsch Wellness

2. "Vary your workout! Increase both the duration and intensity of your cardio exercise a couple of times a week. So, say, if you are doing 30 minutes on the elliptical, make it 45. In terms of intensity, if you are at level three, go to a level five. —DK

3. "When you’re on the treadmill, do a 30-20-10 interval cycle to rev up your metabolism and burn 100 calories in 10 minutes. First, warm up for two minutes, running at a moderate pace, then bump up to a jog for 30 seconds; next, run for 20 seconds and sprint for 10 seconds. Repeat six to eight times, then cool down for one to two minutes at moderate pace." — Kristin McGee, a yoga and Pilates instructor in NYC