Answer:
Weighted squats, ten repetitions each set, with longer resting time between sets.
Step-by-step explanation:
To stimulate muscle strength, exercise should be done with some weight. The weight promotes a greater effort of the muscle, encouraging its resistance. For this reason, we can say that if Chris wants to increase his strength in the lower body, he must do squats with weight.
In addition, Chris should increase the rest time between sets. This is because resting will cause Chris to avoid several injuries and help his immune system recover. In addition, during rest, Chris's body will release various hormones that will help him gain lean mass and stimulate his muscle.