Adults can also take an immediate perception of rhythmic structures, from simple regularity of the pulse and its possible organization in binary form (a strong accent, a weak one) or ternary (a strong accent, two weak). The regularity of the pulse of the wrist is always cited as the first form of rhythmic experience that can be felt by every human being.
Breathing in its binary alternation of inspiration and expiration, is the physiological context in which it can be easily experienced a simple process of regular rhythmic organization.
Any other experience of the body, from walking to the alternation in the movement of the arms, can be used for the detection of a rhythmic structure elementary.
From this it can develop all kinds of complex skill, and already the ternary structure may seem more difficult (this happens to a lot of music students!), but the limits of learning ability can never be defined in a rigid way.