I guess it depends upon how many bruises you can count on your arms the next day...
I'm happy to attack anybody as hard as they like. Sometimes they have fun with that and enjoy the opportunity. Other times they just use their strength to overpower me. I'm not inclined to keep beating my arms against that kind of tori as it's no fun when you can't lean on the table the next day without wincing
Anybody who wants to attack me hard is more than welcome and their gift will be most gratefully received. And they won't go home with bruises