
My son goes to the gym a lot. How can I tell if this is healthy or a sign something is wrong?
Samuel Cornell, The University of Queensland
Thomas Jeffries, Western Sydney University

Clare Collins, University of Newcastle

John (Eddie) La Marca, WEHI (Walter and Eliza Hall Institute of Medical Research) and Sarah Diepstraten, WEHI (Walter and Eliza Hall Institute of Medical Research)

Robert Lucas, University of Manchester

Nial Wheate, Macquarie University and Wai-Jo Jocelin Chan, UNSW ; University of Sydney

Yasmine Probst, University of Wollongong and Olivia Wills, University of Wollongong
