I chose to track my weight personally. 
All this while I've been running. But recently my left knee not so good, injured.
So, gotta find alternative to workout. As long as I look good, it's fine with me. So, this is my 1st time commit to gym.

I just wanna know/ hope you guys can recommend some workout that doesn't really affect my leg.

Note: my left knee felt uncomfortable after 8 mins of walking on treadmill.

I stroke faster when I was swimming last time. It gotten worst....... so, I stopped swimming.
I even everyday apply yoko-yoko so that I can run 16km tomorrow. Just last run for this year *pray hard*

Coincidentally my left knee is also injured. But Dr said cannot cycle also. :S