I fed myself on $2 a day for a month - here are my 9 best tips for making it work

Kathleen Elkins/Business Insider

It turns out that eating on $2 a day is more than possible.

I know because I tried it in January. I was inspired by a young Elon Musk, who challenged himself to a minimal food budget as a teenager to see if he had what it takes to be an entrepreneur.

I don't recommend this tedious lifestyle if you can help it (and neither does Musk), but if you decide to take the "Elon Musk challenge" - or if you're looking to lower your monthly grocery bill - here are my nine best tips.