USER1999
Grand Slam Winner
Any repeated movement causes wear and tear. He's not out there just to enjoy his round and take in the scenery for God's sake. He's trying to play elite level sport and beat the best athletes in the game. There are zero parallels between him and you.
Not picking on you, but a theory (mine) based on the elite level stuff v amateur. He is playing elite golf, but is also in theory an elite athlete, although a bit older. Mainy on here are far from elite, both golf wise, and physically too. If a 55 year old can play 36 holes medal, carrying a bag, surely an elite level pro can play less shots, whilst not carrying a golf bag? Half of his shots are putts, so in reality, it's 30 to 40 golf shots, some of which are chips.
Mentally tiring, yes, for sure. Physically? 40 shots over 4 and some hours? Far from convinced.