James Hetfield good for 50 shows

While on the Nerdist Podcast, with host Chris Hardwick, James Hetfield mentioned that they have tour dates scheduled for the whole year but are limiting performances to 50 a year. That sounds like a lot to me.
Loudwire.com has more details and an audio clip from the show below. 

Metallica’s James Hetfield: My Body Can Only Handle 50 Shows a Year

Via loudwire.com