Cernovich @Cernovich
Seems clear that heart rate zones 3-4 are deadly. “You should walk, sprint, or lift.” (Hear this pretty often by gym bros.) Seems about right. — PolitiTweet.org
Cernovich @Cernovich
“A relatively unexpected high prevalence of cardiac events in endurance elite athletes was observed as compared wit… https://t.co/9K8t0mY7Uk
