delivery men

There are lots of people here, at least in Delhi, that deliver things on bicycles. Either they stack things on the bike or they pull a cart behind them with what they are delivering.
I have always been fascinated by these men since they are all so skinny and I just don't know how they do it. It looks like one little bump on the road (of which there are about 100 on these roads) would break them in half. Recently, however, I've noticed some of the things they are delivering and find myself wondering: what they do when they arrive, i.e., how do they get it in the house?
Example: in the past week I saw one man pulling a cart with a refrigerator and another with a washing machine. Admittedly fridges here aren't as big as they are back home but seriously, what does he do when he gets to his destination? How does he get it in the house?
Of course I also don't know how the little guy that delivers water to my house manages to make it up the stairs with two boxes (12 x 1 litre) of water, but he does.
And now a list of things I've seen being delivered by bike without a cart, just stacked all over the bike:
water - several jugs, very tricky to deliver, I've only seen this twice and it is the only thing I've seen people struggling with.
baskets - stacked sky high, you can barely see the bike, just looks like a moving pile of baskets.
gas containers - like the kind used for bbq's back home. They will have 4 or 5 of them on their bikes, strikes me as super unsafe, but almost all homes have one for cooking (I have one). They are just one of a million reasons why I would never drive here, fear of hitting one of them!
Anyway, this is what I watch and think about when I'm sitting in the car; how do they manage to balance and pull these things; what do they do upon arrival, etc., etc. I never knew that traffic could be so entertaining.
Aside: the TV show Monk is now being shown here. Two channels have the "new season", however, the "new" seasons are different but premiering at the same time. Such is English TV in India, the "new" is old, sometimes a year old, sometimes a few years old. Anyway, kind of a cute show, never watched it before. Another "new" one here is Psych which I like better and also never watched at home.