Haven't try that actually. And based on the feedback and self assessment, it seems like I don't vary my workout routine that much. That's good and sad to know. I'll improve on that first.
I'm small actually. 164cm 65kg 😅

I never take a week layoff yet. So far my plan is to get my weight to at least 70kg. I'm the type that if I don't workout, don't feel the pain, it's hard for me to gain weight. But I'll think about it. That seems like a good option too 

To be honest, I don't know. And don't really care much about it 

Because based on BMI, right now it's 24.2. So this weight should be around ideal for my height. But looking at the mirror, I know I'm far from it. I'm not aiming to be big though. Just want to be more muscular and fitter.