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MTI Adventurewear Youth's Vest Life Jacket
MTI Adventurewear's Youth Life Vest is a PFD designed for children about 5 to 10 years old and 50 to 90lb with some swimming ability. On MTI's youth PFDs they use soft PVC foam, rolled seams, soft comfortable fabrics, and a wide range of sizes to ensure a comfortable fit. The center zip is backed up with a secure waist belt and MTI uses high visibility colors.
$38.95 
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Training Tips
Heart monitors are useful for knowing when you are in the right zone for your training efforts. If you understand what your maximum heart rate is, you can set up your monitor to beep at you when you exceed the high or low range of your heart rate for the type of workout you are doing.
Cross training gives your body a chance to recover while still exercising. If yesterday has a hard run day up and down hills, then today's bicycle ride gives your aching knees a well deserved break.
Anaeroic threshold is when lactic acid starts to build up in your body as your muscles are not getting the oxygen they require. This threshold is typically expressed as a percentage of your VO2 max - the amount of oxygen per kilogram of weight that a person can use in converting fuel to energy. Elite athletes threshold might be as high as 90% of VO2 max.
Efficient running position allows you to run farther and faster. Keep the heel raise to a minimum, relax your upper body and hands, keep your upper body poised and quiet.
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