Oh yes!! when i saw your message my instant thought was of when i was younger and i would wake up and find brusies in the shape of hand prints and finger prints, which would disappear within hours.
These bruises where usually on the INSIDE of my thighs and arms and the finger print looking ones where large and wide spaced, far too spaced to be human. One thing i found out was when found theses bruises in the morning i woke feeling that i had no sleep, in fact i would usually woke more tired than i did when i went to bed.
Now i am alot older i do not get these bruises any more, i did watch a programme on alien abductions and the guy who was being interviewed did say alot of people who did experiance similiar symptoms usually asked for it on some mental level and if the person wanted the these to stop the would just need to tell them to stop, well i gave it ago and lot weird things that used to happen stopped very quickly, coincidense?? i dont know, but i am glad it stopped, maybe its was just all in my head.
And one other thing i dont bruise easily. i practice combat kickboxing with no safety gear and do not get any bruises when sparing (full and semi contact).
"Only the small secrets need to be protected. The big ones are kept secret by public incredulity." ~ Marshall McLuhan