<unk>  does not include the translational or rotational kinetic<unk>  of a body as a whole. It also does not include the relativistic mass-energy equivalent E = mc2. It excludes any potential<unk>  a body may have because of its location in external gravitational or electrostatic field, although the potential<unk>  it has in a field due to an induced electric or magnetic dipole moment does count, as does the<unk>  of deformation of solids (stress-strain).
The principle of equipartition of<unk>  in classical statistical mechanics states that each molecular quadratic degree of freedom receives 1/2 kT of<unk> ,

a result which was modified when quantum mechanics explained certain anomalies; e.g., in the observed specific heats of crystals (when  hν > kT). For monoatomic helium and other noble gases, the<unk>  consists only of the translational kinetic<unk>  of the individual atoms. Monoatomic particles, of course, do not (sensibly) rotate or vibrate, and are not electronically excited to higher<unk> es except at very high temperatures.
From the standpoint of statistical mechanics, the<unk>  is equal to the ensemble average of the total<unk>  of the system.
Internal energy
Energy transformation
Heat transfer
Cell signaling
Emotion
Action potential
Muscle contraction
Oxygenation