@misc{indiciae097dfb79e868,
  title = {How long does it take to become fit?},
  author = {J Pearn},
  year = {1980},
  doi = {10.1136/bmj.281.6254.1522},
  url = {https://pubmed.ncbi.nlm.nih.gov/7437862/},
  note = {Source identifier: 7437862}
}