Do you have a lot to do in your day?
Does the mere thought of having to exercise make you find other things to do instead?
Even un-productive activities?
Just take it one day at a time.
Each day is different and will require a different set of parametrical thoughts and applications.
Please make some small attempt to include the most important thing that you could ever do for yourself.
Besides, every other activity will seem more enjoyable and fruitful.
You may go.