Burls titanium fixed

I'm currently trying to put on weight, however, whilst maintaining my power-to-weight ratio, as best as I can tell without the use of sophisticated measuring devices.

I cycle, run, and now play rubgy again.
I've been losing weight, which really shows on long bike climbs/ runs.
But last rugby season, my ribbs cracked like twiglets, due to my lack of bulk.

So I have come to the conclusion that I need a ultra light bike + need to eat lots of pies.