That's a good point. Combining actions that you already execute with habits you would like to develop can be a powerful thing. To take the gym example further,

That's a good point. Combining actions that you already execute with habits you would like to develop can be a powerful thing. To take the gym example further, I realized that I needed to be doing more cardio (any cardio at all), but the treadmill was the most boring activity on earth. I could only spend a few minutes on it before getting bored. To combat this, I started listening to an audio language lesson in a foreign language that I'd been meaning to learn while walking on the treadmill. Pretty soon, I ended up spending 20+ minute chunks of time on the treadmill while learning my target language, which amplified both of the habits that I wanted.