This is a very typical "extreme reach" barrier. I cannot exercise every day, therefore I am not going to do any. What about starting at once per week? You don'

This is a very typical "extreme reach" barrier. I cannot exercise every day, therefore I am not going to do any. What about starting at once per week? You don't have start at the optimal point. Once per week is already going to create the habit, give you some health and energy benefits and you can scale up from there. Also, gym or equipment are not necessary. I do everything at home, and my only "equipment" is composed of a mat and a pull-up bar attached to a door. You can get each item for around 10$. You can do HIIT cardio exercises that last only 10-20 minutes and have been shown to be much more beneficial than long cardio sessions like running for one hour. You can also increase muscle mass doing calisthenics exercises with as little as 10 minutes of exercise no more than twice per week (total weekly time: 20 minutes). I recommend reading the 4 Hour Body from Tim Ferris for this. There are a lot of options that don't need to include going to the gym or long exercises.