Martin's goal is to increase his leg strength. look at these entries in his workout log and determine which principle of training he is most likely focusing on in order to reach that goal. monday 20 squats, 20 lunges, 10 box jumps tuesday 20 squats, 20 lunges, 10 box jumps wednesday 30-minute easy run thursday 20 squats, 20 lunges, 10 box jumps friday 20 squats, 20 lunges, 10 box jumps saturday 30-minute easy run sunday 20 squats, 20 lunges, 10 box jumps