How to increase my vo2 max ?

Thx

I’ll try thx 

To the science:

Direct link: https://www.youtube.com/watch?v=YBgAr7kLsZY

How do you turn off VO2 max setting for trail runs? Do you turn it off each time or for all trail runs as a default?
What is the reasoning behind turning it off for trail runs?

lachancp said:

How do you turn off VO2 max setting for trail runs?

Select the trail run profile, go to the trail run settings and there you'll find the option to turn off vo2max.

lachancp said:

Do you turn it off each time or for all trail runs as a default?

Once you turn it off, it stays off until you turn it on back again.

lachancp said:

What is the reasoning behind turning it off for trail runs?

It doesn't work properly for most types of terrain.

With the F6 were you able to increase your Vo2 Max without having to run?
Who has knee problems or anything like did it?
I'm always stuck at 44

Thank you for the answers! That is great to know. And it's no wonder why I had difficulty in raising my VO2 max score for the longest time. Once I focused more on regular runs and hitting all 3 types of runs and recommendations from the watch, my VO2 max score went up a few points.
I did a trail run a few days ago and the watch told me that my performance went DOWN which was very strange to see. I was sprinting up the hills, then running cooldowns, and I guess the watch doesn't take hills/grades into account to the extent that it needs to. Garmin needs to fix the Grade Adjusted Pace and to recognize the effort it takes to run up hills.

lachancp said:

the watch told me that my performance went DOWN which was very strange to see. I was sprinting up the hills, then running cooldowns, and I guess the watch doesn't take hills/grades into accoun

Correct. When you run uphill, the watch sees HR/pace duration segments where the pace is lower for the same HR (since you climb), so your performance appears lower. Power-based evaluation is a bit more accurate, as the power sensors adjust for grade, to some extent. GAP will have the same issue as power sensors to adjust for grade (because of generally poor grade information).