The article presents the results of researches of 156 submariners of the first age-related group from crews of a-submarine during first several days on rest and in the end of the rest? Which was allowed after a long (2,5 months and more) autonomous float. Researches showed the effectiveness of reductive rest for the crews of a-submarines in conditions of Kolskoye Zapolyarye. Defined that in the 1st age-lated group ought to attend 1,9% of submariners with signs of non-adaptation and overpressure of physiological systems of organism. It's confirmed that good exponents of health condition could be attained by overpressure of functional systems. Authors propose to examine the submariner's organism functions by different diagnostics axis.