Front Bear Hug
If someone attacks in a rear bear hug, the first
thing you want to do is lower your weight to prevent them from
being able to pick you up. Getting picked up can be bad because
they usually smash you down on the pavement.
Step back with one leg to drop your weight and
you are in position to send a few knees to your attacker's groin
or stomach. Make sure you are breathing (yelling is better)
as you attack with each strike.
A few consecutive blows may free you or at least
loosen the hold. Then using your palms, drive them into his
ribs (floating ribs) at each side.
At that time you should decide whether to follow
up with strikes to the face, depending on what kind of danger
you feel you are in. Your arms may be free or pinned, but in
both situations you should use them to steady yourself by holding
your opponent in order to deliver more accurate strikes and
to push him away once he is weakened by them.
As stated earlier, the worst scenario here is
that they pick you up and slam you. So it is important to react
quickly and decisively. See self