Maybe Toronto is way more expensive than Houston, but a cheese burger from McDonalds is $1 and 300 calories.

Pre-made Tasty Bites are like 2.40 and you can throwthem on a bed of rice and eat 3 meals for $10 a day.

And if you cook yourself and eat mostly vegetarian or cheap meats you can easily get your per meal costs into the $2 range.

https://www.budgetbytes.com/

I know the rent is more expensive, in Houston you can easily get a ~800 sq ft 1 br 8 minutes from downtown in a nice neighborhood for $850. If you live in a 2 br with roommates or an efficiency you can get that down to $400-$500.