RT Journal T1 EXercise JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 2010 FD September 1 VO 164 IS 9 SP 888 OP 888 DO 10.1001/archpediatrics.2010.164 UL http://dx.doi.org/10.1001/archpediatrics.2010.164 AB Exercise and physical activity are an essential part of childhood and adolescence. These activities keep your child healthy both physically and mentally.