Specifically how DO we "relax"?

[HerbM]

Every new boxer and many experienced ones hear this time and time again: Relax. You need to relax. Don't be so tight, just relax.

But "just relax" is not really advice. It is merely a euphemism for "stop being tight" without any mechanism for actually DOING SOMETHING to cause that.

How does a boxer go about relaxing while fighting?

It also ignores the fact that if you were totally relaxed you would (almost certainly) fall down -- implied but seldom explained is that the boxer must release tension that isn't helpful while keeping (just) enough to maintain posture, form, stance, guard etc.

Obviously, we don't want to be dried spaghetti, but neither do we want to be cooked noodles, so it is not just how to relax, but how much and where specifically to relax.

I know, or think I know, some specific techniques, but would much prefer first hearing about anything (and everything) that the experienced (or newbies for that matter) fighters and trainers would suggest to actual take positive steps to relax in the right way.

Serious question folks -- please help....

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HerbM