Nice work! You might try changing up the time a little and see if other times work for you as well. Marc just recently put out a video on gesture drawing that I found helpful. As I am just starting gesture drawing as well as well I found the shorter times hard to soak in information. Marc recently suggested I move up to 2 mins and its working well for me. So maybe try 1 min - 2 mins and see what works for you. I also went through the past 20 art school videos or so to look at other students gesture drawings to absorb what they emphasize and disregard. I found that really helpful as well. Huge improvement, Keep it up!