New guy pushes hard but not sore

[pakto]

Hello All,

This is my first post. I am very new to all this. I am a tiny guy (5 foot 10 and only 62kg) Basically your skin and bone.

I have just bought a home gym (cable weight type), and I am trying to gain some muscle. Bulk up a bit so the wind don't blow me away.

I do about 1 hour of work out every 3 days. I am concentrating on upper body at the moment. I do 5 exercises at 3 sets x 8-12reps. I push hard and feel pumped afterwards.....

But I am not sore the next day. ????

I do train at night and go to sleep within a few hours after.

Please tell me it's not mantatory to be sore....

Cheers.