Ready to gets the legs burning?! Join GB's Gill Fullen, a multiple AG World Champion at Duathlon, Powerman, 70.3 & Long Distance Triathlon for this 'Lactic Legs Challenge'. Gill describes it as a "bread and butter" session that her coach, Perry Agass and the Trisutto training group use with their athletes. A full hour of "two minutes on, one minute recovery". Keep your cadence LOW throughout - build resistance, strength and resilience and feel the burn...