What is a one-sentence summary of the following article?
The key to cutting pounds is consistency. Consistently carving out time in your day to walk, play sports, or otherwise exercise will help you when it comes time to step on the scale, for two reasons:  You'll shed weight a little at a time instead of in big bursts. It's easier to lose 1/4 pound per day and exercise every day to exercise twice a week and and lose 1 pound per day. It's easier to get into a routine. Once you're in a routine, it'll be easier to find the motivation to work out every day and harder to justify skipping a day. Exercising with a friend is a great way to keep your motivation running high. It's harder to skip a day when your friend is expecting you at the gym. Not only this, but it's an excellent opportunity to strengthen the relationship with your friend. Nothing makes buddies more than sweat and tears. . Interval training involves short bursts of fiendish activity spread out over a longer period of time, and has been found to be particularly effective in burning calories. For example, instead of running around a track the same speed four times to complete the mile, run around the track at regular speed three times, and for the fourth, sprint as fast as you can. Interval training is not only more effective at burning calories than traditional exercise, it's also more efficient. Interval trainers burn more calories quicker than traditional trainers. Some people perk up like birds in the morning; others are night-owls, and take a little longer to rev up. Whatever type person you are, try to exercise whenever you really start going. It doesn't make sense to work out when your tank is empty; you'll get far more return on your investment if you choose to work out at the right time. You want to lose weight, and you want to do it fast. Whatever your reason is, keep it close to your heart, and let it motivate you to keep on trying when you think you can't. Because there will come a time when you want to quit, when you feel like you've given it everything you got, and the desire to quit will be stronger than ever. That'll be when you need to summon up the motivation to continue. Your motivation can be:  A friend or a family member; maybe you're losing weight because you were inspired by them. A professional athlete; maybe you've always looked up to them. An idea or cause; maybe you care deeply about improving your health and feeling better every day. The challenge itself, because you know you can. Researchers at the University of Chicago have found that people who sleep for 8.5 hours a night were able to lose 55% more body fat than those who only slept 5.5 hours. Getting insufficient sleep can increase the hormone ghrelin. Ghrelin makes individuals hungrier and can affect how fat is stored in the body. In order to get the most out of your workout routine, be sure to give yourself enough time catching zzzs.

Summary:
Be consistent — exercise a little, each and every day. Exercise with a friend. Try interval training Work out when you have the most energy. Keep your inspiration close to your heart. Make sure you sleep enough.