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Jansport Tribe 3L
The Jansport Tribe 3 Liter hydration pack is the hydration choice of clever camels everywhere. A full spectrum of nice touches makes this pack a great choice for a midsummer day hike. Jansport starts with the ingenious Nalgene-designed V-shaped Water Tower reservoir, which maximizes fluid flow as the reservoir gets drained. The Tribe is fully expandable, with a handy organizer pocket for your keys and lunch that features a headphone port for tunes on the trail. Jansport's unique Nirvana bite-valve has easy shut-off. It even stores in its own compressible pocket so it doesn't slap against your chest as you descend the peak you just bagged. Jansport's Quick Connect reservoir feature allows you to chill the reservoir without freezing the tube—they come apart and re-connect easily!
$89.90 
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Training Tips
When buying a new pair of running shoes, bring your old ones with you. You will get a better fit if you know if you supinate or pronate.
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.
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