Several recent events have had me thinking about this subject. The most recent one was a mixing session for a trio record date that I was on right after getting back from ISB this summer. I had to play the session cold after basically 5-6 days of not practicing because I couldn't take a bass to Ithaca. While listening back to the tracks we recorded those 2 days, I was thinking that I sounded functionally OK, but also that I sounded like a machine that wasn't calibrated (i.e. - a car that wasn't tuned but still ran ok, a skilled athlete who could play the game but was out of shape, etc.). No great tragedy and nothing to be done about it in this case, but still it stuck in my craw a little. It happens a lot at this phase of life when everything is so busy with job, family, transportation for my son, etc. I still play basically like me but often the fine tuning is off. When I was younger and just learning the bass and hungry to get better I fell into this routine of doing a 36 minute 12 key warmup with a metronome and a drone playlist the that cycled through all the keys 3 minutes at a time without stopping. At the end of that 36 minutes,I felt connected to the bass, like I knew how sounds connected to the instrument in a very intuitive and visceral way. At that point, the targeted practicing that came after tended to go pretty smoothly. I remember that some days would get busy and I would be too tired to practice after or I only had time for the warmup, but even then I felt like just doing that every day was useful to stay connected to the bass. Anyway, I've picked the habit back up in the past few weeks and am making a resolution to keep it going even if its the only thing I get to do on any given day. I was wondering what some of my other TB brethren do to stay calibrated. Please share your routines!