You have bone pressed and non-bone pressed measurements.
Bone pressed are more accurate as the bone will not move, you will just push into the fat pad to track a gain.
Non-bone pressed is your usable penis as people like to say and the measurement can be less accurate if you gain more fat in your fat pad or lose which can vary the results.
Flaccid stretch length is when you stretch the penis as far as it can go and it will give you a close measurement to your erect length. I found that after a while your penis becomes more stretchy after a routine and can stretch a little longer. I myself haven’t experienced any gains even though my flaccid length increased but some people say that it can be a sign that your erect length may increase soon but im not sure if its been proven.
If you get an erect gain it will be a GAIN as long as you measured correctly the first time. Just make sure you continue what you are doing and do not push any harder until all gains have STOPPED. Then continue to cement those gains so they dont go away. For example if you reach a certain length through gains then just suddenly stop you will most likely lose it. Slow and steady wins the race :)
I am still a newbie myself but anyone else can correct me if I am wrong about anything.
3/02/2019 - BPEL 6.5", MSEG 5.5"
BPEL 6.5” to 9.0" 8% Progress 6.7”
MSEG 5.5” to 6.5" 19.7% Progress 5.71”