We’ve all had the experience of sensing time decelerate naturally when we’re not so thrilled about what we’re doing (think torturous spinning class or hour-long “synergy workshop” at the office). As my dear grandmother would have said, it takes only one colonoscopy to prove that time is relative. But what about the more enjoyable times in life? I hoped that practicing the popular and proven type of meditation called mindfulness—which focuses on bringing awareness to the present moment—might help me slow those times down as well.

It was Friday night in Shinjuku, a Tokyo neighborhood famous for neon signs, subterranean shopping malls, and rent-by-the-hour lodgings known as love hotels. In crowded bars, people tipped back beers and sang karaoke. Young men with black jackets and gelled hair stood on street corners, offering menus of available escorts to passersby. In the midst of the action was a store window, covered except for a narrow strip of glass. If you were to have stopped and looked through it, you would have seen something strange: my legs, submerged to the ankles, with 600 flesh-eating fish feasting on my feet.

This is the story of how I got there.

I recently had the amazing opportunity to write a story for O, The Oprah Magazine about taking a trip in which I based all of my decisions, from what I saw to where I slept, on the recommendations of strangers. It’s out in the June issue, along with this slide show.

What do feelings have to do with numbers? Most women know that it is possible to immediately gain 15 pounds by eating one pint of Ben & Jerry’s. And when it comes to your butt (which can enlarge six sizes in the wrong pair of jeans), the rules of physics no longer apply. 

We need a better way to quantify these fluctuations — a formula that goes beyond your BMI and calculates the feel of overweight. So I propose the personal body image index (PBII).

The general idea is as follows:

• Start with your weight. 
• Subtract seven pounds if you have just worked out. 
• Add five if you’ve single-handedly finished a plate of guacamole and chips; four for macaroni and cheese; six for death-by-chocolate cake. 
• Subtract 10 pounds if people nearby are fatter than you.
• If you’re wearing black pants, subtract two; if in a bathing suit, add eight. 
• If you are more than seven years older than the group average or are surrounded by bikini-clad undergraduates with toned stomachs and cellulite-free thighs, add 20.