Hey Wrangell,
Thanks for the info. I'm 19 years old and I know that I can push myself and survive 20 minutes of this high intensity stuff. I'm a very sporty person and I could survive 30 minutes of running.
Fair enough, at 19 and at that your fitness level...you should be able to give HIIT a good go it seems.
I haven't used a bike before so all I have to do is hop onto the bike, right, and get started.
I'd use the
very first bike session just to do a steady pace - not HIIT - 20 minute bike ride - just to get acquainted with the bike . No need to rush. This will allow you to get used to riding at a steady 80 rpm, to find out what seat height is most comfortable, play around with the resistance levels a bit, adjust the toe traps on the peddles etc.
0 to 3.30 = warm up
3.30 to 4 = high intensity
4 to 4:30 = minimal/mod
4:30 to 5 = high intensity
5 to 5:30 = minimal/mod
until 18:30 minutes and then ill go minimal/mod to cool down up to 20:30 minutes
That's the general idea. I wouldn't start with a 1:1 ratio ( 30 seconds on / 30 seconds off ) just yet though. I'd probably opt for a 1:3 ratio to start as I think you're going to find you need more time to recover than you think. So, use your first 2 or 3 HIIT sessions to do some trial and error - i.e play around with different time of work/rest sessions, the intensity of sessions etc. If it were me, I'd eventually aim to a protocol of 1:2 and still try for 1 minute work interval and stick with that for awhile. But again, that's just me.
Yup...you're good to go.
I'm on a bf % of around 13-14 so how many times a week should i be doing this and how long will it take to get my bf % to around 10%? Cheers
To start, I'd probably start with HIIT 2X a week with at least a day or 2 of rest between sessions. Do that 2X a week for at least a couple of weeks. On other days you can do 30 minutes of steady state cardio or weights etc. I've seen one trainer advocate maxing out with HIIT 5X a week ( for a short period of time ) to optimize fat loss ( this is after 12 weeks of HIIT training mind you ) - but I wouldn't do any more than HIIT 4X a week and I wouldn't try that for another 6-8 weeks or so. Try 2X a week for a couple of weeks, then move up to 3X a week and if you're into it, eventually shoot for 4X a week if your goal is some short term fat loss. From a long term perspective though, I'd probably try to do HIIT no more than 3X a week on an on-going basis.
As for fat loss, it depends on lbs. For some gym rats, dropping 4% in body fat means dropping 5 lbs, for others it might mean dropping 10,15 + lbs. etc. etc.
Whether you choose to approach fat loss with a combo of cardio, diet and weight training, the rate of fat loss depends on how aggressively you approach each of those areas. A reasonable approach would be to try and aim for dropping about .5 - 1.0 lbs of fat a week. But again, how much fat you will actually lose each week depends a lot on diet and the type, frequency, duration, and intensity of your exercise regimen as well.