Academic writers have many, many writing habits

Productivity, I discovered, is a broad church that tolerates many creeds. Some successful academics write daily, others sporadically; some at home, others at work; soe on trains or airplanes or during children's sports practice, others in distraction-free environments; some on a word processor others in longhand or using voice-recognition software; some whenever they have a few minutes free, others only when they have cleared hours or days of uninterrupted time.

Helen Sword, Air & Light & Time & Space: How Successful Academics Write (Cambridge, MA: Harvard Univ. Press, 2017), p. 15