Functional magnetic stimulation (FMS) is commonly used to accelerate the healing process and alleviate pain. Recently, it has been shown to be useful for non-invasive body-shaping techniques. Low-frequency therapeutic ultrasound has been proven to be a safe, non-invasive alternative to liposuction. This report discusses a few cases to compare the effects of FMS with the combination of FMS with low-frequency therapeutic ultrasound on muscle thickness, volume, and subcutaneous adipose tissue thickness which can increase muscle strength and loss of unwanted fat. Four healthy Caucasian female volunteers aged between 42 and 45 years received 10 sessions of FMS using the Tesla Former prestige device (Iskra Medical, Otoče, Slovenia). Additionally, three volunteers (out of four) received four sessions of low-frequency therapeutic ultrasound with the Sonic Shaper device (Iskra Medical). The efficacy of the treatments was evaluated through ultrasound imaging and tensiomyography (TMG). Patients 1 and 2 received the application of FMS on the gluteal area and Sonic Shaper on the gluteal adipose tissue. However, patient 4 received the combination treatment on the rectus abdominalis, and patient 3 received only FMS treatment on the gluteus maximus (GMx) and gluteus medius (GMe) instead. The measurements collected after the last session showed significant improvements in each patient. Post-treatment measurement of left/right gluteus maximus diameter for patients 1, 2, and 3 showed an increase compared to the baseline. Patient 4, who received combination treatment on the rectus abdominis muscle (RAb), also showed an increase in rectus abdominis diameter. The study shows that FMS increases muscle volume, whereas low-frequency therapeutic ultrasound reduces localized subcutaneous adipose tissue thickness. Combining these two non-invasive treatments may be a promising, safe, and effective intervention for body shaping and countering.