Casiano, Ester P. The harmful effects of too much exercise/ Ester P. Casiano. - Philippines; In The Grade School, Inc., c2010-2011. - v59 n8, pages 333-334: illustrations; 27cm. ISSN: 2094-8042 Subjects--Topical Terms: Physical fitness--Harmful effects. Dewey Class. No.: DPer 370.105 M72 June 2010-Mar 2011 v. 59 n. 1-10