how to pause the execution of current go routine

pauseExecutionGoroutine.go

// Go program to illustrate how
// to put a goroutine to sleep
package main
  
import (
   "fmt"
   "time"
)
  
// Here, the value of Sleep function is zero
// So, this function return immediately.
func show(str string) {
  
    for x := 0; x <4; x++ {
      
        time.Sleep(0 * time.Millisecond)
        fmt.Println(str)
    }
}
  
// Main Function
func main() {
  
    // Calling Goroutine
    go show("Hello")
  
    // Calling function
    show("Bye")
}