If you are not being spotted and can't lift it anymore than you can easily drop it on your chest or ribs.
reported bench pressing 110lbs/50kg
Most people do not use a belt at all when bench pressing.
no of course not
390
bench pressing.
no.
A bench press is a form of exercise which is performed by pressing the mass of a barbell away from one's body while lying on a bench.
by bench pressing for about a week
about twelve
You could be pressing the brake pedal too hard. Another reason why it may jerk is because the pull brake is engaged.
Probably brake pads.
Hovering your foot over the brake without actually pressing on the brake