dun think it's about their food intakeFirst, FAS need to ban them from drinking sweet drink like bundung and milo dinosaur etc...
Then, Ban them from eating unhealthy oily food...

https://www.straitstimes.com/sport/...pore-under-23s-target-aff-championship-trophy
National Under-23 head coach Nazri Nasir has called on his charges to show results by winning the 2022 Asean Football Federation (AFF) U23 Championship in Phnom Penh, Cambodia from Feb 14-26.
Only the winners' trophy matters for Nazri. The 51-year-old said: "We want to win. We aren't going there (just) to participate. It's been a while since we did well in regional tournaments, especially at youth level."
https://www.straitstimes.com/sport/...pore-under-23s-target-aff-championship-trophy
National Under-23 head coach Nazri Nasir has called on his charges to show results by winning the 2022 Asean Football Federation (AFF) U23 Championship in Phnom Penh, Cambodia from Feb 14-26.
Only the winners' trophy matters for Nazri. The 51-year-old said: "We want to win. We aren't going there (just) to participate. It's been a while since we did well in regional tournaments, especially at youth level."