The Dodge and Burn tools hearken back to the days of darkrooms and chemical trays and have certainly earned their place in Photoshop’s toolbox
To work smarter and non-destructively with the Dodge and Burn tools, add a new layer and go to Edit>Fill. Choose 50% grey from the Contents: Use menu and hit OK.
Change the blend mode of this layer to Overlay, and the grey will disappear. Dodge and burn using this layer, and those effects will be more visible, as opposed to working on the image’s layer.