He could run outside around your neighbourhood or in a nearby park for an hour, make sure to eat less fatty and unhealthy food, eat more fruits and healthier meals. Also he could eat smaller portion sizes and drink plenty of water. If you can go to a nearby gym and do some exercises there
:)
Hope it works out for him
Freestyle wrestling is a grappling style that is also practiced worldwide. This style of wrestling has links to “catch-as-catch-can” styles of wrestling, which involve using almost any technique to throw down and pin your opponent in order to win. Freestyle wrestling brings together the different traditional wrestling styles of sambo and judo.
The name “Greco-Roman” was used to purport that this style of wrestling is similar to styles used by ancient civilizations around the Mediterranean Sea, especially during the ancient Greek Olympics. Greco-Roman wrestling is practiced worldwide and was first part of the Olympic Games in 1896. It has continued to be part of the summer Olympics since 1908. Greco-Roman and freestyle wrestling have some key similarities but also differences. Both involve grappling with an opponent, takedowns, and turns with the aim of pinning an opponent. The major differences between these two styles of wrestling include the following One of the main differences between these two styles of wrestling is that Greco-Roman forbids any holds below the waist, but freestyle wrestling allows you to use your legs as both defensive and offensive weapons. You can also use a double leg or single leg takedown to pin your opponent to the mat. Because of this major difference, these two wrestling styles use vastly different strategies and techniques.
180 cm converted to feet is 5.90 feet if you have to round then 6 feet but it is exactly 5.9 feet