Another thing Jillian sees that can hinder weight loss is that people under-train. "They underestimate their abilities and do things like rest for long periods between sets, lift less than they could and should, jog more slowly, etc," Jillian said.
"All these things slow your progress and inhibit your best calorie burn," she added. Jillian said to push a little harder, and don't be afraid to get your heart rate up — to roughly 80 percent of your max.
You may find it challenging to push yourself when working out alone, so take a group fitness class, join a gym, or find a workout buddy to pump you up and push you out of your comfort zone. You'll feel encouraged to grab the heavier dumbbells, move a little faster, or do another set. That's when you'll start to see results.