It does not matter even if you work full time, go to school, need to go vacation, sick in bed, or even if you are in space, anyone can do this. Whatever you say not to try this system, it is just a excuse. Anywhere in the world, if you have one time access to internet, it's all you need.
Hindi mahalaga kahit na ang trabaho mo ng buong oras, pumunta sa paaralan, kailangang pumunta bakasyon, may sakit sa kama, o kahit na kung kayo ay nasa lugar, kahit sino ay maaaring gawin ito. Anuman ang sabihin hindi mo subukan ang sistemang ito, ito ay lamang ng isang excuse.