You do NOT need 2 people to muscle test you .
There are several techniques that you can use for yourself.
If you would like a link to those I will supply it.
Also as far as muscle testing/ you might get a *no* off a bad grapefruit,
but a yes off a good one..
also pkging etc, like if a food was in a aluminum tin, then you would probably get a no, even if the nut inside is good for you .. (but not a tinned nut rolf..)
The answer then would be to get a natural shell nut and muscle test it.
Perhaps even a nut *roasted* in canola, soy oil, or peanut oil would be bad for you,
but a home roasted one, with dry method (so easy to do )
or with *good oil* would test well..
This applies as well in Aura readings / to remember to clear your mind completely
of preconceptions, likes, dislikes, when dealing with self..
as you said you /your own mind can alter the result.
You must be open, clear and unbiases when you do a aura reading or muscle testing
The same with intuition.
Every moment all the cells in your body are constantly changing..
what happened just a few minutes ago is now in past,
what you do NOW is what is true as far as what is good for you NOW/ this very moment.
That is why it is good to rely on your own intuition, and personal muscle testing.
As Quinthius said , however really in truth, most folks rarely ar ein touch with
inner self.. they ar eso caught up in complete mind/thought.. past or future thought
and endless mind ramblings.. (their self made *identity*)
I myself fall into this often lol !
it is /can be a continual process to build on til you get to the point where it becomes easier and easier.