About: http://webisa.webdatacommons.org/63005931

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Basically, you use certain kinds of exercise combined with a heart rate monitor to get your heart beating up to a certain rate, and then you focus on keeping it there.
http://www.w3.org/ns/prov#wasQuotedFrom	straightdope.com