(N/A) The atmospheric pressure at sea level is approximately $1.013 \times 10^{5} \,Pa$ (or $N/m^{2}$).
Given that the average surface area of a human body is approximately $2 \,m^{2}$, the total force exerted by the atmosphere on the body is $F = P \times A = (1.013 \times 10^{5} \,N/m^{2}) \times (2 \,m^{2}) \approx 2.026 \times 10^{5} \,N$.
This force is equivalent to the weight of a large object (about $20,000 \,kg$).
However, we do not feel this force because the internal pressure of our body (blood pressure and pressure of fluids in our cells) is slightly higher than the atmospheric pressure, which balances the external force.
Thus, the net force on our body is zero, allowing us to remain unaffected by this massive atmospheric pressure.