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Health Psychol. 2011 Jan;30(1):67-74. doi: 10.1037/a0021859.

The invisible benefits of exercise.

Author information

1
Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, BC. matt@psych.ubc.ca

Abstract

OBJECTIVE:

To examine whether--and why--people underestimate how much they enjoy exercise.

DESIGN:

Across four studies, 279 adults predicted how much they would enjoy exercising, or reported their actual feelings after exercising.

MAIN OUTCOME MEASURES:

Main outcome measures were predicted and actual enjoyment ratings of exercise routines, as well as intention to exercise.

RESULTS:

Participants significantly underestimated how much they would enjoy exercising; this affective forecasting bias emerged consistently for group and individual exercise, and moderate and challenging workouts spanning a wide range of forms, from yoga and Pilates to aerobic exercise and weight training (Studies 1 and 2). We argue that this bias stems largely from forecasting myopia, whereby people place disproportionate weight on the beginning of a workout, which is typically unpleasant. We demonstrate that forecasting myopia can be harnessed (Study 3) or overcome (Study 4), thereby increasing expected enjoyment of exercise. Finally, Study 4 provides evidence for a mediational model, in which improving people's expected enjoyment of exercise leads to increased intention to exercise.

CONCLUSION:

People underestimate how much they enjoy exercise because of a myopic focus on the unpleasant beginning of exercise, but this tendency can be harnessed or overcome, potentially increasing intention to exercise.

PMID:
21299296
DOI:
10.1037/a0021859
[Indexed for MEDLINE]

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