Here are massive red flags I wish I knew in my 20's:
1. Having a big belly. It's a sign of high levels of visceral fat. It wrecks hormones and reduces blood flow to the brain, making you dumber.
2. Sleeping less than 6 hours a day. Long-term sleep deprivation leads to fat gain, lower cognitive function, and eventual disease.
3. Thinking that anything in your 20s is "too late". This belief will stop you from doing some cool shit.
4. Ignoring your environment. Your friends, the people you follow on social media, and anything you have in your life influence your mindset.
5. Bleeding gums. Sign of gum disease. Long-term use can lead to horrible dental health and an increased risk of heart disease, inflammation, and even cognitive decline.