For unhealthy eating, certainly, why not? For the other two it's a bit harder to directly tax those activities, but taxing indirectly it's definitely feasible:

For unhealthy eating, certainly, why not? For the other two it's a bit harder to directly tax those activities, but taxing indirectly it's definitely feasible: private health insurance and life insurance already have different pricing depending on amount of exercise, lifestyle, previous conditions, etc.