Why Sidharth Shukla suffered a heart attack? Did excessive exercise prove fatal?

Siddharth Shukla's fans bid him a final farewell with teary eyes on September 3. Everyone was shocked at his sudden demise. Siddharth's mother, sisters, brother-in-law and cousins attended the funeral. Apart from the family, many TV actors including Jaan Kumar Sanu, Paras Chhabra, Rahul Mahajan, Rashmi Desai, Rakhi Sawant and Arjun Bijlani were also present.