I give up smokin cigaretes, but will it still be very harmful if i smoke weed li!

I give up smokin cigaretes, but will it still be very harmful if i smoke weed like once a month or something??

will it still give me bad skin?
will it stop me from being able to run for long?
will it stop from letting my teeth being as white as they can be???

No dont worry. weed isnt that harmful. I've been smoking for about a year, and for the past 2 months i've been smoking like, every day. My skin has never broken out becuase of it, and my friends skin hasnt either. And the color of my teeth havent changed at all. But i have noticed that after a year i cant run as long. I use to be able to do 3 miles easily, and now it would be a bit harder for me. But i also dont work out as much as i use to. I have friends that smoke every day, and they started like, 3 years ago, and they work out 4 times a week and they can still run a 5 min mile. So it wont effect your running as long as you keep working out.
but yeah. u will be fine if you smoke once a month. You could smoke once a week and still be fine.