9 Possible Reasons Why You’re Feeling So Sluggish During Your Workout

You started your workout feeling great, but a few minutes in you’re sucking wind and totally out of steam. It happens.

But why? We chatted with Janet Hamilton, C.S.C.S., an exercise physiologist with Running Strong in Atlanta, to help you ID your issue. Check out these nine possible culprits and get ready to finish your next workout strong.