Honestly I don't know, and I know a lot of triathletes try to save their legs for the bike/run but I would have thought not using the big muscles that have a huge amount of endurance built in is a bad idea as they'll just drag behind you.
@Sainsburys_Ed started
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Honestly I don't know, and I know a lot of triathletes try to save their legs for the bike/run but I would have thought not using the big muscles that have a huge amount of endurance built in is a bad idea as they'll just drag behind you.