A research by the Institute of Stem Cell Biology and Regenerative Medicine, Stanford School of Medicine says that our skin is regenerated in 7 days. And every cell in our body is replaced every 7 years.
The stages of grief are considered to be seven in number. They are shock, denial, bargaining, guilt, anger, depression, and acceptance
There are seven basic musical notes, namely, ‘do’, ‘re’, ‘me’, ‘fa’, ‘so’, ‘la’ and ‘te’. In Indian music they are denoted as ‘sa’, ‘re’, ‘ga’, ‘ma’, ‘pa’, ‘dha’, and ‘ni’.