Heart rate for exercise? -

I m 31 yrs old, 6 3 , 245, and am in the beginning of a weight loss program. Today on the treadmill, I checked my pulse and figured I was working in the high 180s to low 190s by my count, which seems a bit high. While I didn t slack off, it didn t seem like I was running my guts out, yet I felt a vague sick feeling in my stomach, so I didn t push it (I may go back tonight and do another 20-40 minutes to make sure I didn t slack off).Doesn t that heart rate seem kind of high for the level of activity I was doing? I was on a treadmill, doing interval training...one min. each at level 5,6,7, and 8 and then dropping back down to 5.

I m sorry I cant answer your question. Can you answer mine