Any MUSE users here?
I have been meditating using Muse since September 2018 and since then I clocked 723 minutes of meditation of which I enjoyed 1006 instances of what the device called "Birds" or moments of calm. The problem is, these birds or anything this device reports cannot be used to compare day with day or to cross-analyse with other activities say self-perceived stress, training, nutrition, exposure to pollutants etc.
I am stating this because of the mechanism this device employs to give you results. It basically calibrates for a 1 minute before every session by allowing you to think freely before you actively engage in trying to meditate. Problem is, this calibration is the starting point on which any result the device gives is based upon. If during calibration, I have stressful thoughts, then achieving "birds" is as easy as pie, if during calibration my thoughts are relaxed, then I'll require Buddha-like meditation skills to hit a single bird.
In view of this problem which makes this quantification pretty useless, I was wondering if anyone here has thought about this and has come up with a way to ensure calibration is a constant as possible. I was thinking for example of reading the same 1 minute text during every calibration to ensure a constant starting point but maybe there are better ideas.