1. The elliptical. If you use it correctly, you'll burn calories. But most people keep slowing down the longer they stay on it, so they don't actually get much exercise. And it's not a natural motion, so it doesn't tone muscles the way running and jumping will.
2. Long workouts of moderate intensity. There's a reason they say, "No pain, no gain." You can't improve your fitness without pushing yourself. It's much better to go 20 or 30 minutes at high intensity, than it is to go for an hour at a comfortable pace.
3. Wasting time between reps. Don't look in the mirror, don't check your phone, don't start conversations with other people. Plan out a certain workout for a certain time period, and get it done.
4. Too much cardio and no strength training. Some people are all about burning calories, so they just focus on the treadmill. But building muscle is important too. The more muscle mass you have, the more calories you burn throughout the day.
5. Hydrating with sports drinks. Most sports drinks have too much sugar. Go with water instead . . . the extra electrolytes aren't worth all the empty calories.
6. Doing the same exercises all the time. The more you do something, the more efficient your body gets at doing it. If you run half an hour a day for six months, you'll start burning fewer calories. Try rotating your workouts on a regular basis.
7. Working out alone. Most people get a better workout when they're with someone else. It's more enjoyable to share it, you're more likely to keep showing up, and you'll push yourself harder if you have some competition.
Source: Health News