Delhi Chief Minister Arvind Kejriwal on Thursday said he was feeling "very energetic" after attending a 10-day meditation course in Himachal Pradesh."Returning back from 10-day vipassana course. Feeling very fresh and energetic," Kejriwal tweeted. Kejriwal had gone to attend the session at Dharamkot, close to the Dalai Lama's abode in Himachal Pradesh, on August 1.His course began on August 2. During the 10-day period, he was not allowed to meet anyone and denied access to newspapers and telephones.