The amount of energy spent in search of a sporting record is insane. You put your heart, soul, mind and body into it, and it is a huge relief to achieve it. After such a hard sequence, it's natural to relax and not do so well in the next few games.
That is not the case for Barcelona, however. Even after reaching 35 consecutive matches without a loss in all competitions, the Blaugrana have huge matches on the horizon. The second leg of the UEFA Champions League knockout round against Arsenal is right around the corner, as well as a decisive La Liga game against Villarreal on the road.