Who has the most left in the tank for Game 7?

The Miami Heat must have been sitting around Friday night with ice clinking in cool drinks, keeping tabs on this brutally physical playoff series and rooting for it to go on and on. And on.

Because, really, will the eventual victor have anything left to face the Heat on Tuesday?

First things first.

Boston and Milwaukee have pushed this Eastern Conference semifinal series to a Game 7, and it has been a punch for punch contest from beginning to end. Most playoff matchups look like that, but Miami, the No. 1 seed, already has clinched its conference finals berth and has the advantage of waiting and watching the Bucks and Celtics duke it out.

And duke it out they have. Both teams are so good and stocked with prideful players, what is left in the tank for Game 7? And beyond?

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It’s a big-picture question that will be answered later. For now, the Bucks have to recover while traveling to Boston for a third time in two weeks.

“Not to make any excuses — I’m not the guy to make excuses,” Bucks star Giannis Antetokounmpo said Friday night. “But we’ve played without Khris (Middleton).

“And I believe, as a team, like, we gave everything we had in six games. I haven’t seen, in one of the six games that we played, that I went home and was like, ‘We didn’t give enough effort.’ The effort is always there and hopefully the effort is there in Game 7.”

Three Celtics (Jayson Tatum, Jaylen Brown, Marcus Smart) and two Bucks (Antetokounmpo, Jrue Holiday) played 40 minutes or more in Boston’s 108-95 Game 6 win Friday night at Fiserv Forum. That’s just an example of the all-out effort. The physical toll has shown itself in several areas for both teams at different times.

The Bucks trailed 53-43 at halftime and didn’t look…