Don't even try to veil that sleeping we have rarely fit our work or even life schedule.
How to adapt it to our special and various needs and desires without harm to health. I'm sure the solution already is and soon will be widely available but now let me show you my idea.
I rave about obtaining the substance that enables to choose your sleeping schedule you like. It can be implemented via medical coding or taking some preparations but the result must let us define whether to sleep 8 or 5 hours a day. Note that both will feel o.k. because the relaxation intensity during sleeping course of the second (5hours) is higher.

This will solve one more problem - the death lethal injection will be redundant as incurables will be just sleeping and be alive! For another side, there will be an option not to sleep at all or to sleep just 2 hours. For this, one will be implanted an additional respiratory system supplier and blood circulation subsidiaries to share the work of heart, lungs and