Yes,
I am making a huge assumption that thermal protection is not an issue and that you're wearing the appropriate Emperor's clothing...If not, for whatever reason, hot chocolate or tea is appropriate at the surface to get that core temp up. But that assumes that you have good surface support and the ability to relieve yourself, which comes back to having the right garb (Wetsuit or P-valve).
Details of what's going on is better covered in deco and advanced diving classes- but the body is physiologically still off-gassing significantly and you want to minimize exertion during that period. Obviously you can't or don't want to stay on the water surface forever and the benefits are outweighed by getting into something warmer or more comfortable after some time. Some people just move out of the water-that's fine too. But they won't be as 'clean' and could care less about how they feel post dive.
Harry