That's really good to know - that only 5 minutes a day can make a difference. Much like with exercise, I often put off meditation because I know I won't have the time to "really get into it." If five minutes really can make a difference, then fine. I'm in.
I can honestly tell you that I meditate every day or almost every day for ten minutes. These ten minutes are all I need to see a huge difference in the way I operate in daily life. I am much calmer, compassionate, and happy. I am also a lot less emotionally reactive in the face of stress. Its a great feeling. Meditation is well worth it. Starting with five minutes and slowly increasing the time is the best way to go for consistency.