Just how heavy are boobs?

Guys, we have it easy. While I know everyone wishes they had pecs like Arnold, the reality of it is, girls have it rough!

So you may be wondering just how heavy are boobs?

Wacoal Japan has given us a creative video that demonstrates just what girls have to go through on a daily basis when living an active lifestyle.

So to all the female readers, my heart goes out to you. Thank you.