How would smoking affect a diet?

Long term smoking is terrible for your health. Honestly, smokers are often thin because they smoke instead of snacking on food. But even though they are thing they are usually very unhealthy.

It will most likely be very hard for her at the start if she is unfit at the moment, But it’s not impossible or anything, just make sure she doesn’t ‘over-do’ the exercise. Be aware of her breathing. I’m guessing she is young? So she won’t have high risks of asthma or a heart attack, but she will still have to be careful. As she gets fitter, she will be fine though. My mother is a smoker and she is a very intense badminton player. She plays with the best players 3 times a week. She is very, very fit, but it was so hard for her about 10 years ago when she started playing. She still smokes, and is fitter than most of the other players now. It can be done- her fitness, but it will be harder for her than you.

You could start by walking, then short runs, then build up to longer runs or whatever you guys want to do. Playing sports is good too because when you have fun it won’t really feel like exercise. You don’t have to really get into any sports or anything, just grab a random ball and make up some games. See if you can walk to the mall/school etc instead of driving if it’s possible.

Best of luck.