![The 2020 Miami Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free. The 2020 Miami Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free.](https://www.sidy42k.com/uploads/2/2/3/6/22364986/mm6_orig.jpg)
The 2020 Miami Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free.
![The 2019 Marseille Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free. The 2019 Marseille Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free.](https://www.sidy42k.com/uploads/2/2/3/6/22364986/img-20190324-130506981-hdr_orig.jpg)
The 2019 Marseille Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free.
![The 2018 French Riviera Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free. The 2018 French Riviera Marathon - RUNNING HUMAN: The author and barefoot runner, Doctor Sidy Diallo spells out how and why running can keep you efficiently and durably fit and healthy for free.](https://www.sidy42k.com/uploads/2/2/3/6/22364986/screen-shot-2018-11-07-at-18-14-16_2_orig.png)