diff --git a/README.md b/README.md
index ef35437..41cef5b 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@
 	)
 
 	for i := 0; i < total; i++ {
-		time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 		bar.Increment()
 	}
 	// Gracefully shutdown mpb's monitor goroutine
@@ -86,13 +86,13 @@
 				decor.Percentage(3, decor.DSyncSpace),
 			),
 			mpb.AppendDecorators(
-				decor.ETA(2, 0),
+				decor.ETA(3, 0),
 			),
 		)
 		go func() {
 			defer wg.Done()
 			for i := 0; i < total; i++ {
-				time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		        time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				bar.Increment()
 			}
 		}()
diff --git a/example_test.go b/example_test.go
index 97e4346..7f0f9e8 100644
--- a/example_test.go
+++ b/example_test.go
@@ -39,7 +39,7 @@
 	)
 
 	for i := 0; i < total; i++ {
-		time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 		bar.Increment()
 	}
 
@@ -51,7 +51,7 @@
 	bar := p.AddBar(100, mpb.AppendDecorators(decor.Percentage(5, 0)))
 
 	for !bar.Completed() {
-		time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 		bar.Increment()
 	}
 }
diff --git a/examples/cancel/main.go b/examples/cancel/main.go
index 3cb28c2..b782a58 100644
--- a/examples/cancel/main.go
+++ b/examples/cancel/main.go
@@ -13,12 +13,11 @@
 	"github.com/vbauerster/mpb/decor"
 )
 
-const (
-	maxBlockSize = 12
-)
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
-
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 	defer cancel()
 
@@ -27,13 +26,13 @@
 		mpb.WithWaitGroup(&wg),
 		mpb.WithContext(ctx),
 	)
-	total := 100
+	total := 300
 	numBars := 3
 	wg.Add(numBars)
 
 	for i := 0; i < numBars; i++ {
 		name := fmt.Sprintf("Bar#%d:", i)
-		bar := p.AddBar(int64(total), mpb.BarID(i),
+		bar := p.AddBar(int64(total),
 			mpb.PrependDecorators(
 				decor.StaticName(name, 0, decor.DwidthSync|decor.DidentRight),
 				decor.ETA(4, decor.DSyncSpace),
@@ -42,18 +41,12 @@
 				decor.Percentage(5, 0),
 			),
 		)
+
 		go func() {
 			defer wg.Done()
-			blockSize := rand.Intn(maxBlockSize) + 1
-			for i := 0; i < total; i++ {
-				select {
-				case <-ctx.Done():
-					return
-				default:
-				}
-				sleep(blockSize)
+			for !bar.Completed() {
+				time.Sleep(randomDuration(200 * time.Millisecond))
 				bar.Increment()
-				blockSize = rand.Intn(maxBlockSize) + 1
 			}
 		}()
 	}
@@ -62,6 +55,6 @@
 	fmt.Println("stop")
 }
 
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
+func randomDuration(max time.Duration) time.Duration {
+	return time.Duration(rand.Intn(10)+1) * max / 10
 }
diff --git a/examples/dynTotal/main.go b/examples/dynTotal/main.go
index 6f38a17..d4e13b2 100644
--- a/examples/dynTotal/main.go
+++ b/examples/dynTotal/main.go
@@ -7,6 +7,10 @@
 	"github.com/vbauerster/mpb"
 	"github.com/vbauerster/mpb/decor"
 )
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
 	p := mpb.New()
@@ -43,7 +47,7 @@
 		if i == 250 {
 			close(totalUpd2)
 		}
-		time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 		bar.Increment()
 	}
 
diff --git a/examples/prependETA/main.go b/examples/prependETA/main.go
index 0589662..3a2c5d7 100644
--- a/examples/prependETA/main.go
+++ b/examples/prependETA/main.go
@@ -10,12 +10,11 @@
 	"github.com/vbauerster/mpb/decor"
 )
 
-const (
-	maxBlockSize = 12
-)
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
-
 	var wg sync.WaitGroup
 	p := mpb.New(mpb.WithWaitGroup(&wg))
 	total := 100
@@ -38,11 +37,9 @@
 		)
 		go func() {
 			defer wg.Done()
-			blockSize := rand.Intn(maxBlockSize) + 1
 			for i := 0; i < total; i++ {
-				sleep(blockSize)
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				b.Increment()
-				blockSize = rand.Intn(maxBlockSize) + 1
 			}
 		}()
 	}
@@ -50,7 +47,3 @@
 	p.Stop()
 	fmt.Println("stop")
 }
-
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
-}
diff --git a/examples/prependElapsed/main.go b/examples/prependElapsed/main.go
index 2f3af50..e0a336a 100644
--- a/examples/prependElapsed/main.go
+++ b/examples/prependElapsed/main.go
@@ -10,9 +10,9 @@
 	"github.com/vbauerster/mpb/decor"
 )
 
-const (
-	maxBlockSize = 12
-)
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
 
@@ -38,11 +38,9 @@
 		)
 		go func() {
 			defer wg.Done()
-			blockSize := rand.Intn(maxBlockSize) + 1
 			for i := 0; i < total; i++ {
-				sleep(blockSize)
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				b.Increment()
-				blockSize = rand.Intn(maxBlockSize) + 1
 			}
 		}()
 	}
@@ -50,7 +48,3 @@
 	p.Stop()
 	fmt.Println("stop")
 }
-
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
-}
diff --git a/examples/remove/main.go b/examples/remove/main.go
index f3c4456..a7a375c 100644
--- a/examples/remove/main.go
+++ b/examples/remove/main.go
@@ -10,12 +10,11 @@
 	"github.com/vbauerster/mpb/decor"
 )
 
-const (
-	maxBlockSize = 12
-)
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
-
 	var wg sync.WaitGroup
 	p := mpb.New(mpb.WithWaitGroup(&wg))
 	total := 100
@@ -38,11 +37,9 @@
 		)
 		go func() {
 			defer wg.Done()
-			blockSize := rand.Intn(maxBlockSize) + 1
 			for i := 0; i < total; i++ {
-				sleep(blockSize)
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				b.Increment()
-				blockSize = rand.Intn(maxBlockSize) + 1
 				if b.ID() == 1 && i >= 42 {
 					p.RemoveBar(b)
 					return
@@ -54,7 +51,3 @@
 	p.Stop()
 	fmt.Println("stop")
 }
-
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
-}
diff --git a/examples/simple/main.go b/examples/simple/main.go
index c53ef9f..ccb99a8 100644
--- a/examples/simple/main.go
+++ b/examples/simple/main.go
@@ -9,6 +9,10 @@
 	"github.com/vbauerster/mpb"
 	"github.com/vbauerster/mpb/decor"
 )
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
 	var wg sync.WaitGroup
@@ -28,13 +32,13 @@
 				decor.Percentage(3, decor.DSyncSpace),
 			),
 			mpb.AppendDecorators(
-				decor.ETA(2, 0),
+				decor.ETA(3, 0),
 			),
 		)
 		go func() {
 			defer wg.Done()
 			for i := 0; i < total; i++ {
-				time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				bar.Increment()
 			}
 		}()
diff --git a/examples/singleBar/main.go b/examples/singleBar/main.go
index 44b9388..8305d7b 100644
--- a/examples/singleBar/main.go
+++ b/examples/singleBar/main.go
@@ -39,7 +39,7 @@
 	)
 
 	for i := 0; i < total; i++ {
-		time.Sleep(time.Duration(rand.Intn(10)+1) * time.Second / 100)
+		time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 		bar.Increment()
 	}
 	// Gracefully shutdown mpb's monitor goroutine
diff --git a/examples/sort/main.go b/examples/sort/main.go
index 3bdda2e..03a54c5 100644
--- a/examples/sort/main.go
+++ b/examples/sort/main.go
@@ -10,9 +10,9 @@
 	"github.com/vbauerster/mpb/decor"
 )
 
-const (
-	maxBlockSize = 12
-)
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
 	var wg sync.WaitGroup
@@ -37,14 +37,13 @@
 		)
 		go func() {
 			defer wg.Done()
-			for blockSize, i := 0, 0; i < total; i++ {
-				blockSize = rand.Intn(maxBlockSize) + 1
+			for i := 0; i < total; i++ {
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				if i&1 == 1 {
 					priority := total - int(b.Current())
 					p.UpdateBarPriority(b, priority)
 				}
 				b.Increment()
-				sleep(blockSize)
 			}
 		}()
 	}
@@ -52,7 +51,3 @@
 	p.Stop()
 	fmt.Println("stop")
 }
-
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
-}
diff --git a/examples/stress/main.go b/examples/stress/main.go
index 3ef9e6d..330d45d 100644
--- a/examples/stress/main.go
+++ b/examples/stress/main.go
@@ -11,9 +11,12 @@
 )
 
 const (
-	totalBars    = 32
-	maxBlockSize = 8
+	totalBars = 32
 )
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
 
 func main() {
 
@@ -36,11 +39,9 @@
 
 		go func() {
 			defer wg.Done()
-			blockSize := rand.Intn(maxBlockSize) + 1
 			for i := 0; i < total; i++ {
-				sleep(blockSize)
+				time.Sleep(time.Duration(rand.Intn(10)+1) * (200 * time.Millisecond) / 10)
 				bar.Increment()
-				blockSize = rand.Intn(maxBlockSize) + 1
 			}
 		}()
 	}
@@ -48,7 +49,3 @@
 	p.Stop()
 	fmt.Println("stop")
 }
-
-func sleep(blockSize int) {
-	time.Sleep(time.Duration(blockSize) * (50*time.Millisecond + time.Duration(rand.Intn(5*int(time.Millisecond)))))
-}