PT - JOURNAL ARTICLE AU - Krisberg, Kim TI - New WHO guidelines encourage increase in physical activity DP - 2021 Feb 01 TA - The Nation's Health PG - 19--19 VI - 51 IP - 1 4099 - http://www.thenationshealth.org/content/51/1/19.1.short 4100 - http://www.thenationshealth.org/content/51/1/19.1.full SO - Nations Health2021 Feb 01; 51