Is exercise cheating the reading

After meals that I know will affect my BG I make sure I do some exercise which I know will lower the BG - often making the postprandial lower than the pre. Exercise bike, weights, sit-ups.

This means it is good for the BG readings and I rarely go above 6 mmol/l.
It does seem though that I'm not getting a representative reading of what the food is doing. On the other hand low BG must be good. It feels like I am tailoring exercise to the monitoring.

Does anyone see any issue with this?
I guess a problem would be if I didn't exercise after all suspect meals and only tested when I had exercised but I tend to test after every evening meal (sorry nurse).

Do others do anything similar?

No chips or chocolate.
Bacon/kippers/mackerel and poached eggs
Meat slices with lettuce - a few snacks during the day or maybe salmon salad. Also spring onions, apple raspberries, blueberries to snack.
Beef/steak/lamb/chicken with cabbage, broccoli, leek, mushroom, maybe a baked potato followed by raspberries, blueberries, apple.

While I'm doing this the only thing that bumps the bg is the dinner (usually around 8-9 o'clock). I'm usually around 5 before and can go up to 7 without exercise but use this to keep it down to 6 or less.
Also exercise a bit in the afternoon.
Early stages so a bit obsessive and was fortunately able to give up work to concentrate on this. Might start work again which might change things - my focus in the past has always been work (because I enjoyed it) but hopefully I will continue to consider my health more important.

Probably never eat chips again and won't miss them.
Chocolate yes, but not the large bars of milk chocolate I used to eat 3-4 times a week. Maybe the odd square of high cocoa dark chocolate - which I prefer but thought would be bad for me (doh!).

Yes, it causes you to buy new clothes.
Lost 4 inches round the waist and 1 inch round the neck in the last couple of months.
Finally had to admit things don't fit.

Hope this isn't just an initial burst and I can keep it up.
I find the diet a lot more satisfying than the (many) sandwiches I used to rely on and once you get used to it cooking doesn't take long.

Something odd that I've just noticed.
I used to drink a fair bit of coke zero when I was first diagnosed.
I have a litre and a half in the fridge which is untouched for the last couple of weeks. I keep seeing it but now have no inclination at all to drink it.

Fluid intake is water - about 6 cups of tea a day (twinings: 3 green, 2 english breakfast, 1 assam) and a cup of hot milk before bed.
The green tea is a substitution but I've always liked it - just never made it at home before.
Also if out instead of a latte and muffin I'll have an americano - and find I quite like it.

I don't find any of this a hardship - wish I'd tried it decades ago. Not only helps with my health but also I think makes me a much more pleasant person.