HOW TO DO IT: Assume a bent-knee push-up position with your hands underneath your shoulders and your knees bent at 90-degrees, feet underneath hips. Step your left hand and your right foot forward and continue to crawl forward so that your opposite hand and foot are moving together. Repeat for 30 to 60 seconds. Start with smaller, slower steps and gradually increase the speed and distance traveled per step over time.
Perform each of these exercises for 30 seconds at a time to begin with and gradually build up to 60 seconds by adding five to 10 second increments as your metabolic conditioning improves. Keep your heart rate high and your rest periods between exercises at 30 seconds or less. Finally, alternate between sets of “non-competitive” moves — i.e. switch between exercises that work your upper body and lower body or front and backside. Doing so will minimize fatigue and help you keep up the intensity throughout the workout.
As little as 30 minutes of cardio three to five days a week will add six years to your life, according to research at the Cooper Clinic in Dallas. Do that plus a couple of days of resistance training and you'll not only live longer but also look younger, feel happier, have more energy, and stay slim. Ready for some inspiration for getting your move on? Keep reading for our timeline on the quick and long-lasting benefits of regular exercise.
The brain releases dopamine, the “reward chemical” in response to any form of pleasure, be that exercise, sex, drugs, alcohol, or food. Unfortunately, some people become addicted to dopamine and dependent on the substances that produce it, like drugs or alcohol (and more rarely, food and sex). On the bright side, exercise can help in addiction recovery Aerobic exercise for alcohol recovery: rationale, program description, and preliminary findings. Brown RA, Abrantes AM, Read JP, Marcus BH, Jakicic J, Strong DR, Oakley JR, Ramsey SE, Kahler CW, Stuart GG, Dubreuil ME, Gordon AA. Behavior Modification. 2009 March;33(2):20-249.. Short exercise sessions can also effectively distract drug or alcohol addicts, making them de-prioritize cravings (at least in the short term) The acute effects of exercise on cigarette cravings, withdrawal symptoms, affect and smoking behaviour: a systematic review. Taylor AH, Ussher MH, Faulkner G. Sport and Health Sciences, University of Exeter, Exeter, UK. Addiction. 2007 April;102(4):534-43. Acute effect of a brief bout of exercise on alcohol urges. Ussher M, Sampuran AK, Doshi R, West R, Drummond DC. Department of Community Health Services (Psychology), St. George’s Hospital Medical School, University of London, UK. Addiction. 2004 December;99(12):1542-7.. Working out when on the wagon has other benefits, too. Alcohol abuse disrupts many body processes, including circadian rhythms. As a result, alcoholics find they can’t fall asleep (or stay asleep) without drinking. Exercise can help reboot the body clock, helping people hit the hay at the right time.

Toning your arm muscles will certainly get you the definition you seek, but adding some extra protein to your diet will get you there even faster. Research published in The Journal of Nutrition reveals that packing on the protein increased muscle synthesis by as much as 25 percent, meaning that you can build stronger muscles faster, right in the privacy of your own home.
Endorphins are hormones in the brain associated with a happy, positive feeling. A low level of endorphins is associated with depression. During exercise, plasma levels of this substance increase. This may help to ease symptoms of depression. A recent National Health and Nutrition survey found that physically active people were half as likely to be depressed.
The skin also serves as a release point for heat. (See “Why Does My Face Turn Red When I Exercise?” for more on that.) When you exercise, your muscles generate a lot of heat, which you have to give up to the environment so your body temperature doesn’t get too high, Hackney says. The heat in the muscle transfers to the blood, which shuttles it to the skin; it can then escape into the atmosphere.
The best part about exercising is how much you enjoy the downtime. If you think laying on your couch all day is enjoyable, it has nothing on that hour you spend as a couch potato after a rigorous workout. Jay-Z said it best, “in order to experience joy, you need pain.” The harder you push yourself while exercising, the better you’ll feel when you’re relaxing.

Not feeling up to heavy lifting? Try doing more reps at a lower weight instead and you’ll be kissing that arm fat goodbye in no time. Researchers at Canada’s McMaster University studied a group of 20-something men over a 12-week period, with half the study subjects lifting heavy weight and doing low reps, and another group lifting lighter weights for higher reps. The Journal of Applied Physiology study found that both groups increased their strength and muscle size by approximately the same amount, so if you’re relatively new to lifting or don’t feel up to hitting the heavy weights just yet, don’t worry; lighter lifts will still help you ditch the fat while gaining muscle tone.
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