Ten years ago, if you ever took a group exercise class, you probably had the somewhat unpleasing experience of getting thrown into a 2 minute abs fire drill at the end of the class. These days, however, the conventional ab…...
Ten years ago, if you ever took a group exercise class, you probably had the somewhat unpleasing experience of getting thrown into a 2 minute abs fire drill at the end of the class. These days, however, the conventional ab…...