Working One body part per day is it worthy?

I do it... and seems that it works for me.
The only thing i noticed that your routine seems to me light. Unless you just did not elaborate.

here is my routine.

Monday: Chest, Triceps
Tuesday: Legs, Squats
Wednesday: rest
Thursday: Upper back, pull-ups
Friday: Shoulder, shrugs.
Saturday: lower back, dead-lift
Sunday: rest.

1. I am trying to have a rest next day after 2 biggest exercises like Squats and dead-lifts.
2. I do abs but only when i feels like my day was light (for whatever reason). Like I feel tired and decided to take it easy or simply machine i wanted to workout had been taken. The same goes with biceps. I do not do them. If i feel i did not get enough "pulling" on Thursday i do biceps at the end.

 

PS: Forgot to add that i do Cardio at the end (from 10 minutes to 30 minutes) depends on how tired i am. And Wednesday i am trying to do HIIT for 20-25 minutes.

 

By light i meant something different.
You just said "Chest". My guess is that you do rest between exercises. What do you do? Just sit on a bench?
(That what i meant by light.)

For example my Monday routine:
1. Chest press
2. Abs
3. Dumbbell flys
4. Cable push-down
5. Chest machine
6. Overhead Extension

So the idea is to try to have some rest for the muscle (group) (not for the body) between exercises. I do rest between exercises (just walk to the water fountain to make a sip and back).

Total routine: 35 minutes.
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What you have is similar to what I do. Any routine will will work but to gain lean mass you need to eat properly.

 

If you have the time to work out like this then it is okay but i would put triceps with shoulders or chest and biceps with back and have a extra rest day. if you are training intensley enough you will need it .rest is a part of growth.I used to train with a guy who was 19 stone benched 505lbs and used to train each body part once every 9 days!

 

But is it necessary. I was under the impression that working bodyparts 1x a week was an advanced technique and most people rarely need to do advanced techniques.

Intermediates work well on working a bodypart 2x a week, there are others but my main concern is time. If you don't have to lift 5x...then why do it? Unless you truly are a gym rat.

 

I've read and been told that working one/two muscles per day is more suited for those looking for 'beach muscles' whereas working more than 2 a day aids in building 'functional' muscles (running, jumping, wrestling, body weight exercises)

 

I gained my most strength by doing one body part a day. I would work them to exhaustion, and be sore for days after. I did chest, back, legs, and shoulders. I didnt do anything for arms but they grew right along with the rest of my body.