As i write right now i am grounded! have been grounded at the computer most of the time for over a year...
i did sleep grounded a bit too but using muscle testing it showed to be pretty weak.
Tizona is right, in fact thats how i am grounded right now... i just got a wire going in the ground and the other side of it i hold it in my hand or put my foot on it, whatever way is more convenient.
so you can be grounded for less than 5$ really.
while you sleep, what i recommend people do if they want to go the 'cheap' way is to get the silver socks available at lessemf.com . then wear the socks when you sleep, and ground it with a wire and rod.
For the lighting part, there is two choice:
1st: you avoid getting grounded if there is thunder
2nd: you put a 1megOhm resistor somewhere in the circuit.
through muscle testing, grounded test pretty strong for being good to protect agaisnt EMF, and also other thing... overall good for health... get the book by Clint Ober if you want to see all the studies they done.