I hear a lot of bs about "danabol/dianabol doesn't do anything its just all water weight" There's a reason good bulkers, like dianabol and deca, etc add water weight-- you need it to bulk.
ATP is highly soluable in water, so water helps ATP transport chemical energy within cells for metabolism.
Sodium is an important mineral and electrolyte needed to drive the sodium-potassium pumps, which are important for contraction and stimulation of muscles.
Sodium also helps increase water retention, which improves the storage of carbs as well as amino acid absorption, and improves the muscle’s responsiveness to insulin, a key anabolic hormone.
Staying hydrated increase protein synthesis