I do functional weight lifting which is lifting weights in a way that the body naturally moves. This way I'll have the least amount of imbalance and it helps to work out those small muscles that I didn't realize that I have. So if I do curls then I try to do the curls in a way that would be similar to how I would lift a bag, a person, a person's leg, or any object that that requires the biceps to be used.
i agree, with '' functional training'', i had simon ranting at me and others disagreeing with me over much that point.
but, the biceps like the core are just along for the ride, nearly everything you do with upper body strength works the bicep, at least partially and its the partial point that needs picking up on latter
working the bicep on its own is pointless, its part of a chain and you need to work the whole chain, which is really what your saying,
but then fictionally if you want to lift something heavy like an adult male, you need to load the chain up with a big % of an adult males body weight, which is not being done at all if your curling 2 x 20,, 40 lbs or so, you need to be moving a 160 or so, preferably with one arm, thats where body weight training becomes convenient, as all your doing is lifting a large % of an adult males body weight
then the bicep as indicated by the name has two functions the second is to twist the fore arm, that component gets left out of most peoples work out, as they are two busy flexing the elbow to care
from a ma perspective that second function can be at least, quite probably more important than the first, but again it needs to be loaded up with a realistic resistance to be effective functional training
