I can recall my grade school Music teacher having us chant our names-one of the oldest techniques for teaching kids & (grown ups) rhythm & meter. Look around while you're driving at the various street names, & chant them. You can come up with all kinds of things.

Here are some smoothies to say to help you smooth out those odd meters.
for meters with 5 beats:
(2+3)
ap-ples-or-an-ges-ap-ples-or-an-ges
          (or 3+2)
   or-an-ges-ap-ples-or-an-ges-ap-ples
   
   don't add any pauses!!

for 7:
    (4+3)
ap-ple-or-ange-le-mon-lime-ap-ple-or-ange-le-mon-lime
    (or 3+4)
   le-mon-lime-or-ange-ap-ple-le-mon-lime-or-ange-ap-ple

get the idea?   You can make lots of flavors of smoothies that will work for you.


Boring ole me, my jr. hi band director (no rest for his sould, he's playing in the heavenly band, of course!) taught us to count duple meter with plain ole numbers:

6/8
1 lah lee 2 lah lee 1 lah lee 2 lah lee

    or even more subdividing the beat,

1 tah lah tah lee tah 2 tah lah tah lee tah

9/8
1 lah lee 2 lah lee 3 lah lee 1 lah lee 2 lah lee 3 lah lee

12/8
1 lah lee 2 lah lee 3 lah lee 4 lah lee etc.

   
    thus, no mathematically challenged Musician (like me) ever has to learn to count past 4!


When I listen to wonderful compositions in odd meters, like Take Five, I don't "hear" or "feel" it in 5. Instead, I feel it in 1! If you go to the youtube link Stewart gave us in the other thread, for Dave Brubeck's band playing Take Five, try this. After you try to "hear" or "feel" the 5 beats by counting 12345,12345, stop, play it again, close your eyes & then:    sway left on one measure, sway right on the next. If you keep doing this, you will really begin to understand the meter.
It really flows!!!