Symptoms of rajo-guna — very active, but just like monkey. Monkeys are very active, but all injurious. Wherever they will sit, they "Gata-gata-gat-gat-gat." Not a single moment they are inactive, but all foolishness. That is passion. And goodness means knowledge. So in the previous verse it is described how to come to the platform of goodness. When one comes to the platform of goodness, then he becomes prasanna-manasa, because he is not attacked by the modes of ignorance and passion, means laziness, sleep and foolishly active.

Foolishly active is more dangerous than less active. Because if one is dangerous, it is better not to become very much active, because… Just like this monkey. You will find always very active, but nobody likes them. As soon as a monkey comes, everyone drives them away: Get out! Get out! Get out!

(Srila Prabhupada, lecture on Srimad-Bhagavatam 1.2.20 – Vrndavana, October 31, 1972)