Hi, I have been reading about tren for a while now and a lot of people say that their cardio goes to shit on it. Does tren make it easier to reach the same heart rate at lesser speed than without? Say you walk with 5 mph for 20 mins and get 145 bpm heart rate without tren but can only do 4 mph for the same amount of time but still get 145 bpm heart rate, would the calories burned be the same?