Rahu-Ketu planets are known as shadow planets also called as sinners. Both of these planets do not have their own existence, that is why they start giving their influence according to the planets they sit with. It is also believed that their side effects starts haunting if we do certain things in our daily routine. Watch here Acharya Ajay Dwivedi ji talking both the mistakes that can activate side effects of Rahu - Ketu.