In countries that aren't undergoing an obesity epidemic it is completely normal for men to have visible abs. Any man who does aerobic and anaerobic exercise for an extended period of time (and doesn't eat garbage, like 90% of Americans) will develop a six pack without even trying.
You cannot possibly think that men like this are malnourished...
https://yorkshireccc.com/uploads/crop_image/260/270/20140516...?
https://www2.pictures.zimbio.com/gi/Sainsbury+British+Champi...
http://1.bp.blogspot.com/-cJwna2z0LQI/TeJHl4AZW9I/AAAAAAAAAO...
https://i.pinimg.com/originals/1b/8b/fc/1b8bfcef69fdb3c9aae7...
https://i.dailymail.co.uk/i/pix/2014/06/04/article-2647902-1...