The solution is to do stretches and strengthening exercises that will address the imbalance in your inner thigh. Changing your training to get round the issue isn’t a long term strategy although you might want to avoid any sessions that aggravate the issue (or do reduced volume of those exercises until the issue resolves itself). This may also be a bikefit issue as you are effectively locked into a position without much opportunity to move on a trainer and the loads will be constant rather than the breaks you get outdoors (even the micro ones can help).
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