Is it weird that my boyfriend has been going to the gym twice in one day lately should I be concerned that he's cheating?

He just recently started going to the gym he has been going for 20-40 minutes after work but now he's starting to go twice a day should I be worried if he's lying about were he's going at he cheated before early on in our relationship
Is it weird that my boyfriend has been going to the gym twice in one day lately should I be concerned that he's cheating?
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