Ever hear of a guy named Bob Gajda? Yeah, I didn’t think so.

Gajda is the Executive Director of the Gajda Health Plus Network, and is one of the world’s most prominent kinesiotherapists and sports trainers. However, before all that, he was a bodybuilder back during the ’60s – even going on to win the Mr. America contest. It was during his competitive bodybuilding days that Gajda made an amazing discovery about a system of training called PHA.

(Yeah, I know – you’re here because you’re looking for information on how to lose weight quickly. Well, just stick with me for a second – I promise you’ll be intrigued with Gajda’s work.)

PHA stands for Peripheral Heart Action and is a style of circuit training that Gajda used during his bodybuilding career. What made PHA so unique was that it not only involved stacking together exercises back to back, but sequenced them in a way that each successive exercise targeted a muscle group as far away as possible from the previous exercise.

So instead of doing an exercise for the shoulders, then the chest, then the arms, then the back, etc, PHA might have you do an exercise for the shoulders, then the calves, then the chest, then the thighs, then the back, etc. Not only does this style of training allow muscle groups to rest while you work other ones, but one of main benefits of PHA is that it gives you a much stronger heart.

It’s a pretty simple concept, really.

See, it goes like this – your heart is nothing more than a pump, right? With each time it beats, it keeps blood circulating through your entire body.

Well, when you make a muscle produce force repeatedly (i.e. – do any form of resistance training), your body – via the heart – pumps blood to that muscle. That’s why when you do a set of curls, you get a ‘pump’ in your biceps.

Gajda theorized (and he was right) that he could ‘trick’ the body into pumping blood all over the body, from one end to the other, making the heart work really hard (and thereby making it stronger and more efficient).

So say you do a set of shoulder presses. Your heart is gonna pump blood to the shoulders. Well, as it’s doing that, say immediately after you do the set of shoulder presses, say you do a set of calf raises. Now your heart has to take all that blood it just pumped to the shoulder muscles, and pump it down to the calves.

Then say you do a set of bench presses – the heart is pumping blood back up the body to the chest and triceps. Then you do a set of squats – the heart is pumping blood back down the body again to your legs.

See how that works? Your heart is in a constant state of working as hard as possible, because it’s always pumping extra blood from one end of the body to the other.

And this style of circuit training is good, too, because your muscles never tire out – while one set is working, everything else is resting…it’s your heart (and lungs of course) that’s working overtime.

This kinda workout basically eliminates the need for any sort of traditional ‘cardio’. So much so, that Gajda used this style of training for hospital patients that couldn’t do traditional cardio (for whatever reason) and was able to help them radically improve their heart health.

(And just think of the calories you’d burn doing this kinda training!)