As an alternative - try getting cold.
Historically:
In the warm months the human body stored fat as white fat - storage fat.
In the cold months it stored it as brown fat - instant access fat.
Therefore to make sure you are using brown fat as an energy source when you are exercising you need to make sure your body knows when it is winter - i.e. don’t be warm all/most of the time.
This winter turn the heater down real low in the cab & also take a good icy blast occasionally.
To fool your body into believing it is still winter when the weather is warmer take a cold shower regularly; start with warm then finish with cold.