Hydrogen, oxygen and carbon make up about 99% of the average human. I'm going to cheat a little and leave out the other 1%, which is made up of trace elements (that is, stuff there's only a trace of in the body). Then, let's assume an average adult weighs 70 kilograms.
1 Bake the potatoes: You can bake the potatoes directly on the oven rack, or you can place them a few inches apart on a foil-lined baking sheet. 2  Bake the potatoes for 50 to 60 minutes.3  Flip them over every 20 minutes or so and check them for doneness by piercing them with a fork. This allows steam to escape from the baking potato. 2  Bake the potatoes: You can bake the potatoes directly on the oven rack, or you can place them a few inches apart on a foil-lined baking sheet. 3  Bake the potatoes for 50 to 60 minutes.
7- Put the potato over a cookie sheet or baking pan and place it in the oven. You can put the potato directly on the rack but I would advise against it as it can get messy. Once inside the oven wait around 30 to 40 minutes to turn it over to ensure all parts of the potato are cooked properly. 8- At this point you should have a good idea on how to bake potatoes. When the time is up, use a fork to pierce different areas of the potato.