A Good Workout Plan For a Busy Person? I work in this company from Monday to Friday starting from 8 a.m to 6 p.m. I do overtime almost daily and usually arrived at home at around 9 p.m. I'm not a fit person. Last time I tried to do some running I vomit like a dragon. Won't do that ever again so I decided to buy my first mountain bike after 15 years. It's been one month since I bought this.

My current routine is to ride on Sundays (once a week). Usually lasts 1-2 hours with 14 - 27 km distance with 100-ish meters of elevation at 11-12 km/h speed (always the same route each week) I can feel a huge progress on me by just being able to ride longer and farther than my previous routine.

Is it good for a beginners to do a one ride per week routine? I feel like I could improve more by doing a night ride, but I'm not sure because of the dense traffic around my area.

Also I need your suggestion about the most effective routine for a "busy" person. Thank you.
Going for a start on a weekend like you are doing is a perfect idea.
Once you are comfortable with this (sounds like you're getting better already), perhaps the simplest and most time-effective way would be to try and use your bike to get to or from work.

You can start simple: ride to work one day a week, and if that makes you very tired, you can leave it there and return home by other means, riding your bike back the next day. I am a lazy person when it comes to exercise (I would never go to the gym) yet I have found that using my bike to commute effectively gives me 'free' exercise that does not take up any extra time in my day. As a bonus, it gives me something to look forward to in the mornings and evenings too!

No need to rush into things though. As you are doing, start with one day a week, and move from there when you feel ready.