The off-season is an interesting time for triathletes. Some will eek out a race or two before the shortened season finishes; others have hung up their rarely-used trisuit and are focusing on next season. Ultimately, there’s no ‘one rule fits all’, so you should feel free to experiment with how you spend the next few months. But note this: there’s significant evidence to suggest that mixing up your training environments is beneficial for both the pure physical improvements it can elicit and the ...