What did the Buddha mean by 'development of the body'?

> When that pleasant feeling had arisen in him, it didn't invade his mind and remain because of his *development of the body*. from MN 36 Maha-Saccaka Sutta translated by Thanissaro. Pleasant feeling (vedanā) is not limited to five senses, but can also be experienced by the mind. To understand the sutta, it seems important to understand what exactly is meant by *development of the body*. > When that painful feeling had arisen in him, it didn't invade his mind and remain because of his *development of the mind*. Here the Buddha makes a clear distinction here between 'development of the body' and 'development of the mind', and from MN 119 > [The Blessed One said:] "And how is mindfulness immersed in the *body > developed*, how is it pursued, so as to be of great fruit & great > benefit? **What did the Buddha mean by 'development of the body' versus 'development of the mind'?** Then, how does one develop the body?