Some of the talent of Newton, a sample of the creativity of Galileo or Einstein Genius pinch can be decorating your office. Physics is at bargain prices.
The behavior of a spring depends on its nature. The stiffer, more cost, more rapidly deform and return to its initial position. Just the opposite of what happens with the slinky. But perhaps the best way to see it is to imagine how it would behave if your mattress comfortable rather than stiff springs had slinkies.