Today I did a little bit of exercise

I did only five minutes of exercise today but it was more strenuous than it should have been.  Seriously, it was not that strenuous.  I just raked yards.  I only did that type of work because it was needed.  I want to do more, but I am not sure what I need to do as far as far as that goes.  I used to love to be active and go to the gym.  I hope that I don't have any anxiety to go.