Static stretches can be passive or active. Active static stretches involve working a muscle while using other muscles to hold the stretch, Houlin said, such as lifting a leg in front of you using ...

(CNN) — As you head into the gym, you likely already have a workout plan in mind. Maybe you’re taking a light jog on the treadmill, or you’re working on some bicep curls on arm’s day.

Static stretches can be passive or active. Active static stretches involve working a muscle while using other muscles to hold the stretch, Houlin said, such as lifting a leg in front of you using ...