(HealthDay News) -- If you're a senior who is considering starting an exercise routine, you may have a number of questions.

The American Council on Exercise offers these answers to common questions:

• If you're wondering if it's too late for you to start exercising, it's not. You'll enjoy more health benefits if you're active.
• If you have any medical conditions, talk to your doctor about exercises that are safe for you.
• If you're looking for joint-friendly exercises, consider swimming or water aerobics, biking, elliptical machines or rowing. Talk to your doctor about walking and jogging for healthier bones.
• Start out slowly, for just five minutes a day. Gradually, work up to 30 minutes per day on most days of the week.
• Even if you're at a healthy body weight, you do need to exercise.
• If you're concerned about money, just start walking -- it's free and great for your health.