A little about myself. I am 29 years old, have not worked out in years, eat shit food daily, hardly move during the day, and 6' 2" 230lbs. I decided to get a membership at 24 hour fitness today and just got back from there. I played some hoops, just shooting balls and running after them after missing the goal for a good hour. I sweated good, I was not out of breath, but noticed when I stopped for a few seconds that my heart was really beating good, no biggie. I then did some dumbells for a bit, then went to treadmill for a 3mph walk for 10mins. Well the machine kept saying 178-180. Isn't that high for that little bit of a workout? What are the hazards assuming it was accurate. I was not out of breath at all during any of this.