Whatever sensations are brought on by breathing, will disappear completely as you keep breathing.
Breathing causes relaxation.
Relaxation releases tension.
Neither breathing nor relaxation causes the sensations: stored tensions and pollution in the mind and body cause the sensations: if you keep breathing, you will end up without tension or sensations - only with relaxation and peace and calmness.
Every inhale and every exhale induces relaxation involuntarily.
