Sprinting is great. For my money, it’s the best bang-for-your-buck exercise. If you have only fifteen minutes to spare, you can sprint. If you’re on the road without access to a gym, you can usually find a place to sprint. It’s the missing piece in the quest for optimal leanness; incorporating weekly sprints can really help […]
from Mark's Daily Apple http://ift.tt/1SO7uz7
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