quantity vs intensity cardio

I've recently started exercising harder than usual, with more intense cardio workouts. I was just wondering, is it better to workout for say 45 minutes, raising the heart rate but not getting too out of breath, or for about 20 minutes at a really high intensity, getting really red in the face and out of breath?
Obviously ideally I would workout for 45 minutes at a really high intensity but my fitness levels are definitely not there yet!

Replies

  • LexyDB
    LexyDB Posts: 261
    High intensity intervals for the benefit of raising your metabolism and keeping it high after you've finished your session. A 45 minute session will take time to warm up then tap into fat cells for energy and stops as soon as you do.

    High intensity, short bursts will give greater results.
  • ruby229
    ruby229 Posts: 6
    That's great! Thankyou. It actually suits me much better to exercise that way, I get really bored if I'm not pushing myself.