About: http://webisa.webdatacommons.org/215973503

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	When you can no longer maintain your target pace you end the set. 20 to 30 minutes is a typical duration of the main set depending on fitness level.
http://www.w3.org/ns/prov#wasQuotedFrom	xterraplanet.com