He has been sent rest by BCCI, as per BCCI, he needs mental rest for the upcoming series against WI, as a captain he was in very much pressure.
Coming to the match, India isn't playing as they were expected to. Anyway, Risab Pant is on the pitch, expecting a turn of the match now.
Everyone is having mental issues right now, after Maxwell took a break now Kohli is not in the team because he needs mental rest

. I think this word is used necessary and coming to the game Bangladesh bowled really well to restrict a weak team and only Pant is able to put some total in the board and if they are able to put 140 runs on the board then they have some runs to defend.
Not Sure about it if it is temporary condition or happens every year. umeridrees told about this air pollution thing and only the locals can tell how severe it is. India captain Kholi and few big players resting could be the reason to avoid this bad atmosphere ?
The air pollution is not new, Delhi has the highest level of air pollution for a decade and resting main players is because they are facing Bangladesh and they need to try new players.