There may be many reasons why people may remain inactive. One reason may be due to laziness. Individuals completed a Physical Activity Questionnaire and research showed "Over one third (34 percent) of female and 12 percent of male adolescents had no leisure physical activity during a one-week period. Self-efficacy was found to have the highest correlation to leisure physical activity among all selected determinants, while 'laziness' had the highest correlation among perceived barriers" (Analysis). Along with the questionnaire other research suggested that fitness groups and fitness programs positively altered the exercise behavior of families and youths.