1. You are out of breadth a lot.
2. You are very out of breadth.
3. You are much out of breadth.
4. How aout of breadth you are!
(Which one is grammatical? Which one is similar to #4? What other expressions can we us instead of 'out of breadth.?)
None!
#s 3 and 4 will be fine, though, if you correct the spelling of these two words and delete "much" in #3.:
breath
out
Other expressions can be these:
You are panting very heavily.
You are really winded.
You are gasping for air.