My fitness is appalling, help please?

It's not good if it's that high for long amounts of time, but it's ok for a little bit of time. I would join an activity tho instead! Exercising by yourself is hard and boring. I would join a school sport cause you get friends and have fun while staying healthy! I would suggest colorguard because I love it and it's ammazing, but alot of schools don't have one, however I lost 50 pounds total in my 4 years of guard which doesn't seem like alot in the amount of time but I really hadn't tried the first three years an only lost 20 in those years and this year I lost about another 30 because I started eating healthier too! So just find an activity that will get you active and having fun! Good luck!!!