I see a lot of people taking supplements/vitamins. I am 23 years old, I wonder if it would be good to include this in my current routine? Which ones?

It is generally not necessary to take supplements or vitamins if you are eating well-balanced meals and have a healthy lifestyle. However, for individuals who may not be getting enough sunlight exposure, taking a vitamin D supplement (600 IU per day) can be beneficial. It is always best to consult with a healthcare provider before starting any new supplements to ensure they are appropriate for your specific health needs.