I want to mention a great way to keep your muscles strong and your bones solid like rock. Go walking to stay sleek and lean and to keep bone and muscle from deterorating as you age you MUST do weight resistance or weight bearing exercise.
May I suggest you get a NYKNYC weight walking vest. They are made for women over 50 who need to strengthen bone and muscles too with a cute little vest that looks like clothing but it has sleek cut weights in pockets - so nobody but you knows that you are weight training! wear it under jackets coat or over shirts and sweaters! It turned my osteoporosis around and built my bones so I am now back to strong bones and looking years younger !
I joined the "Silver Sneakers Program" at a local gym. It's an exercise program designed for our age group. Many insurance companies now pay for this. They pay for the entire gym membership! Exercise lasts for 45 minutes and includes: warm up, exercise, cool down. You can determine your own intensity of exercise. Available 2 or 3 days a week.
To perform workouts in effective manner, you definitely need good quality shoes as well as clothes. The best thing is that the internet is filled with awesome fitness gears in beautiful designs. I recently got floral printed beyond yoga set that is way too cute.