Now Shabba....I've re-read your post and am going to suggest something really girlie and contentious, so anyone who thinks it a load of bollox can hush the f*ck up because this is based on experience!
I had exactly the same symptoms as you a while back, so I think the first thing is you should do is go down the chemists and buy a packet of those pee sticks that diabetics use - forget what they are called but they measure blood sugar and ketones. You only have ketones in your blood when you are burning body fat, but I'm willing to bet you get the lowest levels on BOTH....I did.
The reason is that, although you think you are eating healthily (as did I), if you are consuming lots of fruit, root vegetables etc.., including salad veg like tomatoes, all that stuff is LOADED with sugar, and its that you burn, not body fat. So as soon as you exert yourself and burn off the sugar hit, you've nothing left because your body says "whoa I'm not burning fat cos I need that, all he feeds me is sugary stuff"..net result, you feel dizzy and light-headed and need another food (sugar) fix...
So what I did was followed my wifes example and went on the good old-fashioned Atkins diet. Now I know what you'll say, which is that there WAS no science to support it and Atkins died of a heart attack.....well in fact he slipped on the ice and broke his skull, and theres now plenty of supporting science for the low-carb approach, so lets knock that on the head (no pun intended!!).
You cut out spuds, pasta, bread and all that stuff and eat meat, cheese, eggs, bacon, cream in your coffee (yes!), non-root vegetables and so on (get the book, it tells you better than I can)....you do this for a short, sharp shock period, normally 2-4 weeks, during which your body says "hey! suddenly I'm getting all this good fat s**t so its OK to burn some of my own cos I know I'll get another fat fix shortly!" and your metabolism changes completely as a result. You can keep on that stage for longer if you want to lose more weight, but there are another 6-7 stages, during which you reintroduce sensible levels of sugary and other foods as appropriate, monitoring the effect until you reach a balance.
Now what I can tell you is this - it works far better for men than women, who have to stick at it longer. My wife lost about 18 lbs in eight weeks and has gone down two dress sizes...she has never felt or looked better. I started it when I got back from Jordan about three weeks ago and have lost 10 lbs already with no exercise or effort. I haven't had that dizzy feeling once and I don't miss the carb stuff at all....in fact I eat MORE than I did (as does my wife) and its all good s**t - I feel great.
The science also shows that it LOWERS the bad LDL cholesterol as well, again because your body doesn't feel the need to retain it.
The only slightly bad news is that you may feel quite tired during the first two weeks as your body is going through quite a big metabolic change, but that passes and these days I feel fantastic! Oh and all that stuff about bad breath and farting is a crock of sh1t!
Have a look at it Shabba and see if it fits your lifestyle - you've nothing to lose mate and it might just sort this thing out for you.....the gym is almost certainly exacerbating the problem if your diet is indeed sugar-heavy (natural or man-made)....
