Is it wise for business to increase marketing funds after a recession?

It all depends on your marketing strategy. Advertising or spending on marketing initiatives during a recession means you are increasing your share of mind at a very low cost. because of the reduction or absence of similar efforts from other players, whether they be direct or indirect competitors. And even if they are not at all related to your line of business. There is so much space and the law of supply and demand will work in your favor. And your share of noise results in a bigger share of mind, at the same or even lower costs.