I agree personal should be the main point of training. Weight bearing exercise should not be neglected. CardiO work should not be neglected either. Changing it up is also important but the time tested methods are cardio and weight bearing exercises. I undersand that functional training is better for older and arthritis patients or rehab patients. Also for other special populations functional training is more appopriate. Movements involving more then one muscle groups such military press, bench press, squats and other movements are more productive.