This paper presents a prototype wearable wellness monitoring system capable of recording, transmitting and analyzing continuous ECG and accelerometer data. The system also provides an application for recording activities, events and potentially important medical symptoms. The hardware allows data to be transmitted wirelessly from on-body sensors to a handheld device using Bluetooth. Data is then transmitted to a back-end server for analysis using either a wireless internet connection, if available, or a cellular phone service. We conducted experiments using the system for activity monitoring, exercise monitoring and medical screening tests and present preliminary data and results.