diff --git a/bar.go b/bar.go
index 95e9828..8ada51d 100644
--- a/bar.go
+++ b/bar.go
@@ -22,7 +22,7 @@
 
 const (
 	formatLen = 5
-	etaAlpha  = 0.25
+	etaAlpha  = 0.12
 )
 
 type barRunes [formatLen]rune
@@ -256,13 +256,9 @@
 	now := time.Now()
 	select {
 	case b.operateState <- func(s *bState) {
-		if s.current == 0 {
-			s.startTime = now
-		} else {
-			s.timeElapsed = now.Sub(s.startTime)
-		}
 		s.current += int64(n)
-		s.updateETA(n, now.Sub(s.blockStartTime))
+		s.timeElapsed = now.Sub(s.startTime)
+		s.timeRemaining = s.calcETA(n, now.Sub(s.blockStartTime))
 		if s.dynamic {
 			curp := decor.CalcPercentage(s.total, s.current, 100)
 			if 100-curp <= s.totalAutoIncrTrigger {
@@ -290,6 +286,8 @@
 
 func (b *Bar) serve(wg *sync.WaitGroup, s *bState, cancel <-chan struct{}) {
 	defer wg.Done()
+	s.startTime = time.Now()
+	s.blockStartTime = s.startTime
 	for {
 		select {
 		case op := <-b.operateState:
@@ -433,10 +431,10 @@
 	}
 }
 
-func (s *bState) updateETA(n int, lastBlockTime time.Duration) {
+func (s *bState) calcETA(n int, lastBlockTime time.Duration) time.Duration {
 	lastItemEstimate := float64(lastBlockTime) / float64(n)
 	s.timePerItemEstimate = time.Duration((s.etaAlpha * lastItemEstimate) + (1-s.etaAlpha)*float64(s.timePerItemEstimate))
-	s.timeRemaining = time.Duration(s.total-s.current) * s.timePerItemEstimate
+	return time.Duration(s.total-s.current) * s.timePerItemEstimate
 }
 
 func newStatistics(s *bState) *decor.Statistics {
diff --git a/bar_option.go b/bar_option.go
index 4b0ef09..18ba396 100644
--- a/bar_option.go
+++ b/bar_option.go
@@ -53,7 +53,7 @@
 
 // BarEtaAlpha option is a way to adjust ETA behavior.
 // You can play with it, if you're not satisfied with default behavior.
-// Default value is 0.25.
+// Default value is 0.12
 func BarEtaAlpha(a float64) BarOption {
 	return func(s *bState) {
 		s.etaAlpha = a
diff --git a/examples/prependElapsed/main.go b/examples/prependElapsed/main.go
index 0df1581..df08d9b 100644
--- a/examples/prependElapsed/main.go
+++ b/examples/prependElapsed/main.go
@@ -15,7 +15,6 @@
 }
 
 func main() {
-
 	var wg sync.WaitGroup
 	p := mpb.New(mpb.WithWaitGroup(&wg))
 	total := 100