Hi Todd
Your site, and insights are great. I went straight out yesterday to get some +1 reading specs.
Tabata is a very exciting application of Hormesis I have been using for two years. Again it is the multiple application of brief intensive stress, with rests to enable repeats, that makes it so clever.
The key is to really push it - you must want to drop after the 6th or 7th rep. The final 8th rep you only get through because you know it is the last! But you should not be literally in a state of collapse. If you have to lie down, you have overdone it.
I do this only once a week – so I am really up for it each time. As you know form HIT, weekly sessions are sufficient when you are pushing the envelope, as they say.
Forget the heart rate monitor – you’ll go way over the recommended level for your age. Some people may worry about getting a heart attack but there is little evidence of exercise-induced attacks, unless there is a (rare) pre-existing condition - see
http://www.cbass.com/ . On balance the benefits of high level fitness far outweigh any risks. And it's fun

I use a cross-trainer (for a good all-over workout) for Tabata plus a Gymboss timer (see on the internet, about £20) so you can time without having to watch a clock. You’ll be so tired you won’t be able to think straight anyway - !
Also with the cross trainer you can start and stop easily and build up speed fast.
I enjoy it – I love the challenge of hitting my target mile/sec rate for each of the eight 20 second exercise bursts. The 10 second rests in between are just joy...
I did a heart rate stress test earlier in the year – heart monitoring on a treadmill medically tested - and my rates were excellent. Blood pressure and return after exercise was way below my chronological age.
I’ll post on back pain and the hormetic ‘fix’ I found which is equally fascinating. Using it, you need never have pain again, with just a 2-minute exercise done a couple of times a week.