I was on a 20-kilometer bike-ride and was so exhausted that my daughter had to wait for me at every 1-meter rise of the road, it was fantastic weather but my body didn´t have any energy,
I did eat kg´s of toffies at that time and lots of pizzas .... don´t do that much anymore, really was a pig with my health, but had otherwise followed the official advice of low fat for 30 years ( wrong advice it seems)
I was surprised because biking is not that difficult and we had all the day, but I just had to walk up every 1-meter "hill" had to jump off the bike and walk and didn´t know what was wrong, we did pass McDonald's and I had an ice-creme there, and wanted to take a taxi the last 5 kilometers, but my daughter convinced me I could do the last part of the trip too, which I did.
I did go to my GP two days later on Monday thought my metabolism was out of whack, that I had too little levothyroxine or even too much didn´t have a clue, the nurse did just for all sake try to measure my blood glucose and it was 17mmol... well she said; you have diabetes I am almost sure... I didn´t believe her... and had to come for more results... and then I didn´t sleep for 3 nights.. and thought; I can´t do this to my daughter, she only has me, I can´t expect her to take care of an ill mother all of her best years of youth.. and then I went 1000 calories for 6 months and lost 35 kg and got normal numbers again, metformin helped me hugely, but my GP took it away from me because my numbers were that low an HbA1c of 34 then...