Here's another incentive to get you up and moving. If you want to do yourself a favor later in life, Japanese researchers say you ought to start exercising in middle age[1] .


Investigators at Tokyo University[2] studied 1,000 Japanese men and women ages 65 and over to find what factors contribute to sarcopenia, or age-related muscle mass loss. They measured and evaluated the participants' grip strength, walking speed, muscle mass, and exercise habits in middle age.


Of the 349 men and 651 women studied, the likelihood of sarcopenia increased with age. However, those who had exercise habits in middle age had a lower occurrence of muscle loss later in life. Sarcopenia can not only cause physical disabilities, it also lower the quality of life and can lead to premature death.


Exercise in middle age not only helps protect against muscle mass loss, it also helps maintain muscle strength and your overall physical condition, researchers say.


Numerous studies point to exercise as essential to aging healthily, and that doesn't mean just physically. Exercise has also been shown to ward off age-related health issues of the mind, including dementia. One study revealed that fit and active middle-aged people reduced their risk of Alzheimer's [3] or other dementias by 40 percent, The Huffington Post reported.


And if you're worried about shrinking as you get older, studies have also pointed to exercise in helping prevent height loss[4] with age.


So there you have it. No more excuses. Scroll through the slideshow below for some of the best exercises for post 50s.



Earlier on HuffPost50:




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  • Yoga


    Yoga offers a <a href="http://www.huffingtonpost.com/deepak-chopra/yoga-heart-health_b_900621.html" target="_hplink">myriad of wellness benefits:</a> flexibility, balance, centeredness, strength, mindfulness and others. Yoga is a great option for aging bodies, as it promotes working within your own comfort zone. Postures and sequences range from gentle and relaxing to more intensive for advanced yogis.




  • Stretching


    Another way to promote flexibility and overall health is incorporating some simple stretches into your daily routine, be it at home, at the gym or even outdoors. Stretching prevents injury, <a href="http://www.huffingtonpost.com/2011/10/24/yoga-stretching-back-pain_n_1029014.html" target="_hplink">can relieve back pain</a> and boosts energy. Note: It's important to stretch properly to avoid injury. Check out some good <a href="http://www.webmd.com/fitness-exercise/healthtool-basic-stretches" target="_hplink">examples of stretches here</a> and these <a href="http://www.huffingtonpost.com/2011/07/08/stretching-mistakes_n_892444.html#s304603&title=Not_Doing_It" target="_hplink">common stretching mistakes</a>.




  • Biking


    Biking is a great low-impact, cardiovascular workout, not to mention it's a lot of fun. There are a few ways to incorporate biking into your routine. Joy rides in your free time are always a good option -- alone or with a group. You could consider joining a local bike group or riding to nearby destinations instead of taking the car. <a href="http://www.livestrong.com/article/456032-stationary-bikes-and-health-benefits/" target="_hplink">Stationary bikes</a> also have great health benefits. Already a cycler? Here's how to get <a href="http://www.huffingtonpost.com/2011/05/30/6-ways-to-get-more-benefi_n_868670.html#s285033&title=Get_in_tune" target="_hplink">more benefit from your bike ride</a>.




  • Brisk Walks


    One of the most <a href="http://www.mayoclinic.com/health/walking/HQ01612" target="_hplink">beneficial exercises</a> is something humans have been doing for centuries: walking. Simple modifications to your routine, like parking further away and walking the extra distance or taking the stairs instead of the elevator, can really add up to boost your overall health. For an even greater benefit, take brisk walks that get your heart rate up.




  • Pilates


    <a href="http://pilates.about.com/od/whatispilates/a/WhatIsPilates.htm" target="_hplink">Pilates</a> is another low-impact exercise that's ideal for aging bodies. It's similar to yoga but puts more emphasis on gaining control and balance of the body by strengthening the core muscles. Pilates can be done in a class or at home with a video or other guide. <a href="http://www.huffingtonpost.co.uk/paola-bassanese/keep-fit-with-classical-p_b_987756.html" target="_hplink">This piece</a> offers a great run-down of the activity, along with images of some classic pilates stretches and workouts.




  • Tennis


    Tennis is a classic sport, well-loved for being fun and <a href="http://my.clevelandclinic.org/heart/prevention/exercise/tennis.aspx" target="_hplink">great for you</a>. It's a strong aerobic workout and helps keep you agile, especially important as you get older. Tennis is also a very social activity -- great for the body, mind and spirit!




  • Swimming


    Swimming is easy on the body and is also one of the most comprehensive workouts, hitting <a href="http://www.webmd.com/fitness-exercise/guide/fitness-basics-swimming-is-for-everyone" target="_hplink">all the major muscle groups</a>: shoulders, back, abdominals, legs, hips and glutes. If you're getting serious about swimming, it's important to learn proper techniques, but even free-styling in the local pool or outdoors in the summer is a great way to exercise.




  • Dance


    Dancing is one of those activities that doesn't feel like working out, but is an incredible <a href="http://www.livestrong.com/article/91589-fitness-benefits-dance/" target="_hplink">aerobic exercise</a>. It's a good option for those that want more physical activity but don't like the gym or in the winter when it's harder to get outdoors. There are a bunch of styles to choose from: ballroom dancing, contra dancing, salsa, ballet, tap, country and others.




  • Elliptical


    As the body ages, running and jogging can take a toll on the joints, knees or back and potentially cause injury. An elliptical cross-training machine is an alternative to running, which still gets your heart rate up but at a <a href="http://www.mayoclinic.com/health/elliptical-machines/AN01620" target="_hplink">lower impact</a>.




  • Strengthening Exercises


    You can take a simple walk to the next level by bringing weights along to build strength in your arms and boost the cardio benefits. Strength-building techniques like pushups, squats and lunges are easy to do at home or can be squeezed into buckets of free time throughout the day.