You cannot push yourself hard all of the time even though your HRV is good. You need to cycle RPE for HIIT (CrossFit) just like you do for weight training programming ( you don't try to hit a 1RM every weight training session do you?). Do you have a HR monitor? If not, I would get one even though CrossFitter's scoff at them. Monitoring your HR during CrossFit WODs helps you to know what system your training, e.g,, aerobic, anaerobic, etc. If you are constantly training above your aerobic threshold your not going to make gains that you are capable of making. Another recommendation is to buy Joel's book on MMA Training because what he says in there is directly applicable to figuring out a decent CrossFit program. I am a CrossFitter too at least 5 times a week in addition to an hour or so Oly session prior to my WOD (I'm 58 so I got you on age!) My attitude toward trying to kill every WOD changed completely after reading Joel's MMA book and learning how to properly train the different energy systems. Some days I train at only 60% effort even though my HRV is GREEN. I have added in additional LSD work that was missing in my programming. I monitor my HR during the WOD so I train the targetted energy system. My CF programming follows a progressive loading (intensity and volume) like my Oly programming. So I would not necessarily go all out every time you are in the GREEN...put together a program and follow the loading scheme.
Correction "....training above your anaerobic threshold..."
When I started using the HRV monitor I was surprized too when it showed me consistently GREEN when I felt pretty beat up from previous days workouts. Conversely, I was surprized when it showed AMBER or RED when I felt pretty good but I did not follow my recovery protocol faithfully so I could account for the HRV change. So perhaps you are more fit than you thought so you may need to rethink your programming.
So I just turned 43, I Crossfit about 4 or 5 times a week and feel like I push myself pretty hard. I started the HRV tracking on Dec 7. I've had 7 amber days, 1 red and all the rest have been green. (I worked out anyway on the red day because I felt pretty good and woke up sick the next morning). My weekly and monthly HRV loads are shown as low for every single day.
I guess this all means I could be pushing myself a lot harder? I feel like I work pretty hard and am worn down a good amount. Any input is appreciated. Thanks.