Pet rock (team of 2)
You're pet rock does not like to be dropped below head level nor rest directly on top of your head.
Start with 400m with pet rock (switch off during if have too) remember pet rock must remain overhead!
Then perform a total (remember PET ROcK!)
200 sit ups
End wit 400m with pet rock!
If pet rock is dropped at any time, team must immidiately run 400m w/o pet rock