Is it true about second growth spurt and how to know?

[adanggthagrey]

im 16 years old but still no adam's apple and my voice is like a baby, even my uncle thought i was 13-14. If second growth spurt is real how to notice and maybe how to maximize its growth? im 175cm and 62kg.

 

[Riley209711]

just do masai jumps

 

[joey32]

. If second growth spurt is real how to notice

if ur eating alot