Play and energy regulation in mammals.

@article{Barber1991PlayAE,
  title={Play and energy regulation in mammals.},
  author={Nigel Barber},
  journal={The Quarterly review of biology},
  year={1991},
  volume={66 2},
  pages={
          129-47
        }
}
Analysis of ecological constraints on juvenile mammals suggests that energy expended in play behavior does not reduce fitness, but actually increases it. When viewed as a promoter of adaptive energy loss, play can be considered an antipredator strategy. In addition, it may balance a low-protein diet in favor of growth, as well as increase resistance to pathogens and to cold exposure. These short-term benefits result from activation of the sympathetic nervous system (SNS), which is hypothesized… CONTINUE READING
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