<human>: So basically I got this big wave of rage and stupid and took it out on my heavybag this morning. I didn't stretch, and haven't worked out in months. I was whaling on the thing at 100% for about 25 seconds before I was out of breath, went upstairs and had a cold drink. Fast-forward five hours:

No pain, but I cannot flex my right arm AT ALL. Like nothing. When I attempt to I can get my arm to about a 160° angle but nothing more. Also, when I feel my bicep it feels very lumpy at this point. Two large lumps in particular, one above the other.

Is this a simple pull or have a done some more damage? The fact that my bicep feels lumpy is quite unnerving, I can't remember pulling a muscle and physically feeling it distort the surface of the muscle.

Can you provide a brief overview of the text?
<bot>: Got angry, didn't stretch, went all out on punching bag, messed up arm. Can't flex, bicep lumpy, no pain. :S