6 pack in 3 months

Hi.. just joined to community. Wishing all of you success on your goals..

I had a bet with colleagues about making 6 pack in 3 months..
I am 36 years old.. 185 cm height and 91 kg of weight..no have time for gym because of work so only i can run and make work out at home..
Comoaring to my age and 3 months time.. would you think is it possible to make 6 pack in 3 months?? Otherwise i may lose 2 bottle of blue label whisky..which will be pain in the ...

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