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Hemsworth said he designed Centr Power with trainer Luke Zocchi after years of testing and refining their approach. For his 2020–21 Thor preparation he described continuing strength training, then moving toward hypertrophy in nine-week blocks with every tenth week as a deload; on rest days he used non-weighted activity such as surfing.

Three strength sessions and three cardio sessions, with a long run, a faster run and intervals. He describes substitutions, a rest day and periodic breaks from weights.