Cardio help....Whats up with my heart rate???

[AbsolutelyLethal]

Alright first the facts. Im 19, 6'0, 215.

Ive recently(the last few months) lost about 20-30 lbs of weight(some fat and muscle) just by dieting(watching what eat).

Ive decided to do some Cardio and picked up spinning. I cant do all parts of the class because my heart rate explodes up to like 170. I'd say my perceived exhaustion would be a 5-6 out of 10 when I get to 170-175 but I dont want to exceed 170, as that is 85% of my MHR, so I just sit down and cycle until it lowers. A light spin with little to no exertion(1-2 out of 10) gets me to like 130-140 beats easily and a little harder(2-3 out of 10) Im at 150-160. What can I do? I want to stay in my fat burning zone.

Another thing is I go spinning at 9 Am but i have a class at 8, so i wake up at 7. I normally have a bowl of cereal(about 1.5-2 cups of cereal, and 2/3-1 cup of milk) plus 8 oz of OJ because If not I will feel famished. Is this really hurting my fat burning chances? Heck, Im hungry after spinning at 10 and usually eat then too...

[Rich8888]

What is your resting heart rate??

[AbsolutelyLethal]

Id say resting HR is about 90...That seems kinda high....

[abstrack]

anything below 100 is ok, but your right there at the mark just about

[abstrack]

also why dont you go before class and do your cardio on a empty stomach, try walking the tred mill and do it for 30-45 min. at good pace.
, then whenyour done with that get your meal in.=.02

[yellows2k]

The cereal and OJ isn't certainly hurting it. The sugar is actually replenishing glycogen lost during your sleep.

[brad fuel]

your RHR is 90? holy shit.... are you on any ECA's?

[AbsolutelyLethal]

wow on ECA's i thought i was going to die...I alway felt so lethargic....