Health: Alzheimer's Risk can be Reduced

A plan

Diet and exercise are the most obvious anyway so only the specifics of this article should be the focus. 

Fish oil, healthy fats, reduced blood sugar, and more exercise seem to be key. 

Doubles: Body Shots in Tennis during Net Play

Aiming for the body can be a legitimate target to force an error and not to necessarily hit your opponent.  It's usually their choice to turn and submit, face it,  or bail out and exit the court. I had a high school coach who was a college player at one time tell me to aim for the hip on the left, meaning actually the right hip which would always cause a difficult forehand volley response. 

Think of Safety and Drawing Errors

I never aimed high as in head shots or high chest. Generally you were trying to draw errors to either win the point outright or set up the next shot. I've told opponents more than once that if you can't handle the net you shouldn't be there. Of course if I were playing social doubles rather than some competitive match I'd generally just take it easy on them and come up with an alternative. 

A Generally Safe Approach

One thing I always counseled students to do is aim for the feet no matter where your opponent is on the court and you'll improve your chances of defending your position and it's a fair and safe way to be aggressive. That assumes you are in a position to reach their feet. If they're close to the net then that situation doesn't exist, but then a lob is easier to employ. This also may be because I've softened in my old age and don't want to hurt anyone.   

Why Go for the Feet 

A simple reason to go for the feet is that you will be driving the ball down and your opponent will be forced to angle the ball upward.  If you close on the net in this circumstance you'll often have a finishing shot available.

Tennis Teaching Certifications: Do they matter?

Yes they do but here is something to remember when it comes to getting someone into tennis.  Patience and a good demeanor in a beginning tennis coach goes a lot farther than a hard case high demand coaching approach.  Leave them with fun as the main memory from tennis classes.

Regarding Tennis Teaching Organizations and Certifications

They have raised training and skills standards over the decades to address any deficiencies in coaching that may exist. Consider the alternative where there is no certification available other than just high end coaching skills from elite organizations and you have no room for expanding the tennis community by offering coaches that can serve the recreational beginning tennis market. I remember as a kid at age 7 or earlier taking my first lessons from a county instructor who was a high school student. It was the only tennis instruction available back in the early 1960's where I lived and the cost was $5 for a series. This instructor got me started with nothing more than hitting with me and some basic advice and yet I remember him as a superb example of what I would like for a coach to get me into the sport. I'd love to thank him for getting me started. He had no certifications that I remember.

My Experience with the PTR

I think that the PTR does care about improvements to tennis teaching and qualifications. I've had many years of interactions with their members, trainers, and staff. I joined them a few years after they began the organization and took the TennisUniversity from Dennis Van Der Meer. To me, it's a superb organization. They have raised training and skills standards over the decades to address any deficiencies in coaching that may exist. Consider the alternative where there is no certification available other than just high end coaching skills from elite organizations and you have no room for expanding the tennis community by offering coaches that can serve the recreational beginning tennis market.

Retirement: Rest or Rust - Tennis may be the solution for both

Rest and Rust

The trick is to stay viable by doing things that keep you mentally and physically active.  Tennis has to be one of the best ways to stave off decline in both the physical and mental realm.  It offers protection from social Isolation along with physical activity and mental stimulation.

Stay on the court.

Tennis News: Fed Beats Mr.T in Basel, Fed Beats ADM in Basel for WIn

Fed Beats Mr. T

Fed Beats ADM  to win Basel

Murray Risks Severe Health Problems Says Physician - Cobalt Blood Poisoning

Murray Hip Surgery Risk

This doesn't sound good.  If he doesn't need the money he might consider just retiring for good and enjoying his health.  I know it's hard to take when you are used to being a star but there is more than just winning or competing.  This particular risk of blood poisoning is a serious concern.

Tilden: His Personal Collection Surfaces

Tilden

Though his personal life overshadowed his tennis career he was still a remarkable player so rather than removing him from tennis history just include the asterisk by his name as to why he has been intentionally forgotten.