  A peculiarity of the stellar CNO cycle caused by MeV alpha-particles and
protons generated in exoergic nuclear processes is analyzed. The main
parameters of these particles and suprathermal reactions induced by them in a
stellar core are calculated. It is shown that these reactions can trigger an
abnormal nuclear flow in the second branch of the stellar CNO cycle. A
conjecture is made that the phenomenon is of a general nature and can manifest
in various stars at non-exploding stages of their evolution. The influence of
the abnormal flow on some CNO characteristics is demonstrated.
