Osteoporosis is a degenerative bone disease typically found in older adults, especially women, which is characterized by low bone density. Having osteoporosis increases your risk of falling and fractures.

Muscle soreness after a good lower body workout may be par for the course, But if you experience soreness the lasts longer than a day or two, you may have damaged muscle tissue by using poor technique or lifting more weight than you are ready for.

Using a computer, watching television, playing video games or any other activity that involves sitting will lead to a dramatic increase in the tightness of your hip flexors. Hip flexor tension causes a tightness to occur at your hips which makes general movements, such as walking, more difficult.

Walking up and down the stairs is an excellent replacement for walking. Both activities elevate your heart rate and, depending upon your pace, burn calories quickly.

Calf raises are a popular strength training exercise. You can do them as a bodyweight exercise, using only the weight of your own body to train your calves or as a weighted exercise with dumbbells. A barbell, or ankle weights provide additional resistance for muscle strengthening purposes.

The squat is an intense exercise that requires exact technique to get the full benefit and avoid injury. Squats engage the quadriceps, gluteals, hips, hamstrings and calf muscles. The core muscles of the lower back and abdominals also are engaged to stabilize the torso.

The lateral pelvic tilt is a postural deviation in which one side of your pelvis is tilted to your left or right, causing one side of your hip to appear higher than the opposite side.

Though your spine normally curves from front to back, weak or tight muscles can cause too much curvature, resulting in bad posture, pain and injury risk. Your hip flexors are muscles on the front of your thighs.

The squat is a multi-joint exercise that recruits multiple muscles in the lower body, making it one of the most frequently used exercises for strength and conditioning.

Exercising during pregnancy benefits both you and your baby during pregnancy, labor, delivery and recovery. While pregnancy is not an appropriate time to embark on a weight loss program, it is possible to improve muscular fitness and even slim down a few trouble spots such as your hips and butt.

Running and stair climbing are both effective methods for toning and strengthening the lower body.

Firm your butt and thighs with exercises that target the gluteus maximus, quadriceps and hamstrings muscles. Muscle-strengthening activities help tone and shape your buttocks and thighs.