Wearable sensors - measuring of biological functions

Hi,
I'm hopeless student and I don't have any experiences with Arduino. I've problem with my thesis and I think here are experts who can help me. Can you please recommend some wearable sensors for measuring biological functions: heart rate and breath frequency (mainly) and temperature. Most important is possibility for sending informations to mobile and evaluation. The next is localization of holder.
I couldn't find usefull wearable sensors. I found only Lilypad and temperature sensor and pulse sensor.

What is wrong with the sensors you identified?

Paul

I'm looking for alternatives and other sensors for measuring biological functions. Do you know anything else please?