Calisthenics moves such as planks can help strengthen the deep core muscle. Krakenimages.com/ Shutterstock
by Jen Wilson, Nottingham Trent University and Athalie Redwood-Brown, Nottingham Trent...
Sarah Lacy, University of Delaware and Cara Ocobock, University of Notre Dame
Prehistoric men hunted; prehistoric women gathered. At least this is the standard narrative...
A couple piggyback together on the tennis court. Getty Images
– the biology of how muscles change with age
by Roger Fielding, Tufts University
There is perhaps no...