What way of changing the internal energy of a thermodynamic system do you know?

According to 1 law of thermodynamics, the internal energy of a body U can be changed in only two ways: ΔU = Q – A.
1) Transfer of the amount of heat Q to the body.
When the amount of heat Q is transferred to the body, then the internal energy of the body increases ΔU> 0, the body heats up. When the body transfers the amount of heat Q, then the internal energy decreases ΔU <0, the body temperature decreases.
2) Doing work by the body.
When the body performs work, the internal energy decreases ΔU <0. When external forces perform work on the body, the internal energy of the body increases ΔU> 0, it heats up.