@misc{indiciae4f71552e943a,
  title = {Physical activity: how much is enough?},
  author = {Jim McCaffree},
  year = {2003},
  doi = {10.1016/s0002-8223(02)00077-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/12627588/},
  note = {Source identifier: 12627588}
}