Your shoulders do a lot more work in biking than some other cardiovascular activities, such as running, so it’s a good idea to loosen them up with a targeted stretch before getting on your bike. Triathlon coach Scott Seamster, C.S.C.S., suggests a shoulder reach, in which you stand tall, reach your arms up over your head and shrug your shoulders up and down. “Keep your biceps next to your ears and reach your fingertips for the sky so you get a stretch in your latissimus dorsi,” says Seamster. The latissmus dorsi runs underneath the shoulder and down the sides of the back and is responsible in part for adducting the shoulder, or bringing it in toward the body