Lunchtime Wrap: Mastercheap & Caffeine

Didn't catch Lifehacker on Wednesday? Here's the best posts you missed.

Mastercheap: Eating For $25 A Week Supermarkets claim food is cheaper than ever, but just how inexpensively can a single person eat? Lifehacker editor Angus Kidman sets himself the challenge of eating healthily for a whole week with a budget of just $25 — no extras allowed.

What Caffeine Actually Does To Your Brain For all of its wild popularity, caffeine is one seriously misunderstood substance. It’s not a simple upper, and it works differently on different people with different tolerances — even in different menstrual cycles. But you can make it work better for you.

Guard Gateway Data To Ensure Your Online Privacy The notion that revealing your exact location via social networking sites is a bad idea got a lot of publicity via the site Please Rob Me earlier this year. But even if you’re not constantly broadcasting your precise whereabouts, it’s easy to reveal information you’d rather keep private without realising it.

Use Your Mobile Number As A USB Drive Label USB drives have lots of great uses, but they’re also easy to leave behind. One Lifehacker reader adds an extra degree of identification by making his phone number the volume label for his USB drives.


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