Saturday, April 9, 2011

Boost your running endurance with sunshine ad

Sunshine may be intermittent at this time of year,but catching a few rays willimprove your 10K time.
Calcitriol (activated vitamin D)is a steroid hormone we getfrom sunlight. Aussie scientistsfound exposure to this hasa positive effect on enduranceand the number of fast-twitchmuscle fibres activated.

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