LOLing at posts telling the OP to stay hydrated, lose weight, inflate his tires, use a lock, etc.
He is a courier who rides 4 hours/day. It is safe to assume that he is not overweight, knows to stay hydrated, put air in his tires and knows all about locking his bike. This is completely apart from the fact that he didn't ask about any of that.
Maybe you guys could suggest a camera for his next vacation or some good jazz clubs to chill after he gets off work.
-Tim-