@article{heartratevariabilitycodedoesitexistand,
  title = {Heart rate variability code: Does it exist and can we hack it?},
  author = {Martin G. Frasch},
  year = {2020},
  eprint = {2001.08264},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2001.08264v4},
}