Now it’s easyCan't believe no one has mentioned it, but the easiest excuse is to join a gym. I usually go to the gym 6-7 days a week. If I'm planning on getting a happy massage on a particular day, I'll just "go to the gym" at a different hour. "I was too tired to go to the gym this morning so I'll just go this afternoon". You can use this excuse once or twice a week forever.
Gyms were closed for a good part of the pandemic
Plus I have a home gym. If I go out to the gym. I will feel guilty about not actually going to the gym