Smith machines get a lot of unnecessary hate. For me, they're actually the best way to isolate the load onto my quads. When using a smith machine, I don't have to worry about stabilization so I can focus on blasting my quads. I still do regular barbell squats, but squatting on the smith machine is still a very useful adjunct exercise.
If you don't have a squat rack or some way of safely doing barbell squats, then using a smith machine is still good. You'll still target the largest group of muscles in your body and reap the benefits of elevated testosterone.
If you don't have a squat rack or some way of safely doing barbell squats, then using a smith machine is still good. You'll still target the largest group of muscles in your body and reap the benefits of elevated testosterone.