Body by ... Phil? Mickelson's physical transformation continues

Apparently we're talking about more than just Phil Mickelson's calves now.

Mickelson's sister, Tina, posted this photo Tuesday night of a slimmed-down and, well, ripped Phil.

Of course, Phil couldn't let that slide without a response.

Remember, Mickelson went on a six-day "hard fast" before The Open in Northern Ireland. He said he consumed only water and a "special coffee blend."

Mickelson, who did not qualify for this week's FedEx Cup finale, admitted that he has had a disappointing year on the course after winning at Pebble Beach in February. Perhaps it's all the effort he's put in on social media. To recap Phil's latest:

So, what's next?