Buttocks & Pen? しりペン

Japanese follows English.　英語の後に日本語が続きます。

My chubby hubby doing "butt & pen"

This post isn't about "that" type of story, but about "shiri pen," an exercise to help strengthen your back and core. "Shiri pen" literally means "buttocks and pen," but you can of course call it "butt and pen" or "axx and pen." It's very popular now in Japan because of its effectiveness and name.

How to do "shiri pen":

1. Hold a pen.
2. Place it between your buttocks as shown in the above photo.
3. Hold it for eight seconds.

If you want to know more about this exercise, see this. I'm sure you feel your core muscles working!

I learned about it while watching a morning TV show. It was surrealistic to see five or six women wearing sweatpants standing in line in front of a mirror and waiting for the cue from the trainer, "Place the pen between your buttocks!"

It's so weird and funny, but it works!! I did it and felt my inner core muscles. According to Ms. Kujo, the trainer, it's particularly effective to strengthen external anal sphincter muscles and reduce back pain and/or fat around the waist and hips. If you feel something wrong with you back or want to lose belly fat without going to a gym, just do it!

しりペン、もうご存知ですか。私は先週テレビで見るまで全く知りませんでした。（ご存じない方はこちらをどうぞ。）ネーミングがいい！シンプルです！笑えます！

今は洗面所、キッチンにペンを配置。いつでもどこでも「しりペン」できるようにしています。体幹、感じます！