You can most definitely keep your gains, even while training at home. Your success is going to be dependent upon doing the right exercises, keeping up maximum effort, and potentially scouting out some new uses for your furniture or getting creative with household objects to use as added weight.
Lower body training is one of the best ways you can take care of yourself. But many of us find ourselves strapped for time when it comes to our workouts. But lower body training works well for “on the go” since all you really need to do is make use of your own body weight and a minimal amount of space!