Boost your calorie burn with sand runs

Running on sand burns about 1.6 times more calories per workout than running on hard surfaces, according to a Belgian study. Just remember to wear shoes to minimize foot and leg strain.

Limit your speedwork
Keep your speedwork to no more than 10 percent of your weekly mileage, says coach Benji Durden, 1980 Olympic marathon team member, adding that threshold-pace running is not considered speedwork.

Get job satisfaction
People who are more fit are more productive at work, more satisfied with their jobs, and take fewer sick days, according to a new Boise State University study.

Miss a Digest?

Whole foods are more effective for carbo-loading

Running may improve your brain power

Hamstring stretches prevented injuries in military trainees

Study: Air pollution hinders performance

Try a cup of coffee right before a race

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