Best wireless headphones?
Running isn't all about your legs. A powerful upper body will boost your form for better racing.
By Mark Bailey
Watch Next
Aerobic and anaerobic exercise, explained
How to run faster: A coach’s guide to speedwork
Why I pulled out of the London Marathon...again
How to mimic elite runners’ efficient mechanics
This is the average 10K finish time
Aerobic and anaerobic exercise, explained
Aerobic and anaerobic exercise, explained