https://www.ahajournals.org/doi/10.1161/CIR.0000000000000678  

https://www.spiegel.de/gesundheit/ernaehrung/altern-gehgeschwindigkeit-verraet-das-biologische-alter-a-1292429.html

https://www.welt.de/kmpkt/article201868036/Gesundheit-Was-die-Gehgeschwindigkeit-ueber-deinen-IQ-verraet.html

https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2752811  

https://www.heilpraxisnet.de/naturheilpraxis/schrittzaehler-erhoehen-die-aktivitaet-bei-diabetes-und-herz-kreislauf-erkrankungen-20191013469868 Jama paper: https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2752576

Dog ownership associated with longer life, especially among heart attack and stroke survivors https://www.sciencedaily.com/releases/2019/10/191008083121.htm https://www.heilpraxisnet.de/naturheilpraxis/hunde-schuetzen-das-herz-und-verlaengern-das-leben-20191008469386

https://sz-magazin.sueddeutsche.de/gesundheit/schrittzaehler-laufen-gehen-fitnessarmband-87854  

https://www.youtube.com/watch?v=9L2b2khySLE

https://newsnetwork.mayoclinic.org/discussion/womens-wellness-fitness-tips-for-menopause/

https://www.ncbi.nlm.nih.gov/pubmed/31312836