Any advice for a sensory seeking toddler who keeps crashing into me?

[IWasTangoed]

I have a sensory seeking toddler (nearly three) who crashes into me about 30 times a day. Its not tantrum related (though he bangs his head when upset) but just out of impulse which he can'tseem to control. He also crashes into other things deliberately like throwing himself off the sofa. I can't pick anything up of the floor without him leaping on me like a squirrel monkey. It's often quite painful too. His development is above average apparently but this behaviour not typical for the toddlers I've seen.

I have tried the following:
Asking him to bump his head on a cushion instead
Putting my hand in front of his head to stop the impact
Exercising him by taking him out from 10am to 5pm
Going to numerous parks and soft plays to burn the energy
Telling him off (unhelpful I know but it really is painful)

Any ideas about what I can do before my body turns black and blue?

You need to take him to a GP to talk about this.

Then get some of those soft play mats, put them against a wall.

You also have to be very firm and tell him no, he can’t crash into you- you don’t apologise for telling him off. You’re hurt and he needs to learn. He may be doing this to others kids soon at nursery.

Indoor ball pit? But yes, you need to look into why he’s doing this.

Sounds like he needs a sensory assessment from a sensory integration trained OT.
Look at SPD strategies. You could look at The Out of Synch Child has fun book for activities and ideas.
Rather than tell him off use a stop symbol or a flat hand with one word, STOP and redirect him.

Whoops, posted this in the wrong place! Will try to get it moved.

Thank you for the advice so far. GP dismissed it so might need to push a bit more as it is definitely getting out of hand

If the head banging is regular and persistent this is a concern and can lead to scarring or other damage. He may need to be fitted for a helmet.
Have you spoken to your Health visitor? Does he attend a preschool setting where he could be observed by an advisory teacher or other professionals?
Can he communicate his needs effectively?

His nursery says that haven't noticed him do this at all, whilst at home it is constant! Maybe he is masking in that setting, but can a toddler even mask things like that?