A quick guide to getting in shape and improving performance from New York Times “Phys Ed” columnist and author of the New York Times Bestseller The First 20 Minutes 

Do you really know how to get fit and healthy?

Bringing us cutting edge research and science-based prescriptions, Gretchen Reynolds shows us what we do and do not need to do to reach out fitness goals, whether that means running a marathon or just getting off the couch or. Busting popular myths, looking at which supplements actually work, giving us the lowdown on weight training, and singing the praises of just standing up, The First 20 Minutes Personal Trainer is the guide to take wherever you take your workout.