"The best and simplest way to get a high level of fitness is doing repeat 100 yard sprints," says Gavin. Unless you are a conditioned athlete, Gavin recommends running them at about 80 percent of your possible intensity. After completing one, you have a 75-second window to jog back and get ready for the next. In this way, you move between your anaerobic and aerobic systems. Do about 8 to 10 repetitions.
Powered By ZergNet
Style & Design 2014
Tech, Tools, Toys & the Hottest New Gear
Plus: When to Say No to Your Doctor
ON NEWSSTANDS NOW
Mike Rowe Brings Back the Blue Collar Hero
Kidnapped in Syria: Anthony Loyd's Harrowing Story
Sign up to receive the Men’s Journal newsletter and special offers from MJ and its marketing partners.