To ensure a comfortable and warm night's sleep in a dry down sleeping bag, consider the following tips:
I personally sleep in a bed most nights. Some nights I sleep on a couch, some nights in a sleeping bag, some nights on the floor and some nights in a car. It all depends on the events of the preceding day.
give yourself a sleeping pil(tylenol) and it will knock you out.
I would recommend a self-inflating sleeping mat for a comfortable night's sleep in a tent. These mats provide good insulation from the ground and offer cushioning for a more restful sleep.
Yes, a tempurpedic mattress topper can add comfort to a nights sleep. It can help ease the pressure on the body where it meets the mattress, giving the body a better comfort, with less moving to find a comfortable position.
Sleeping naked is generally more comfortable and can keep you cooler on very warm nights. Also, if you sleep with a partner, sleeping naked can keep you both warm much more effectively than sleeping with clothes on. It is also good when your clothes dont follow your body. You wont have to worry about clothes getting in the way anymore when sleeping naked.
Many people sleep naked. It can be very relaxing, is generally more comfortable, and is especially good on hot nights.
A dog will sleep wherever it is used to sleeping, but it is best to make sure the dog has a comfortable spot to sleep, and in the winter, a warm place.
Sleeping under the covers is not necessarily bad for you, but it can lead to overheating and disrupt your sleep quality. It's important to maintain a comfortable temperature while sleeping to ensure a restful night's sleep.
I would recommend a self-inflating sleeping pad for a comfortable night's sleep while camping in a tent. These pads provide good insulation from the ground and offer cushioning for a more restful sleep.
Sleeping with anything on is not particularly bad for you but you would get a better nights sleep in the silent dark. Things like T.V and radios keep the mind active so when you sleep your brain is still pretty active and you don't get a good sleep.
Because it's more comfortable than sleeping with their head in the air. 
They get a good nights rest, albeit less comfortably than sleeping singly.