diff --git a/philo.c b/philo.c
index 3049650..7eb13a2 100644
--- a/philo.c
+++ b/philo.c
@@ -38,7 +38,17 @@ void	eat(t_philo *philo, t_data *data)
 	print_take_a_fork(philo);
 	print_take_a_fork(philo);
 	print_eating(philo);
-	usleep(data->eat_time * 1000);
+	pthread_mutex_lock(&philo->last_eat_mutex);
+	if (get_time() - philo->last_eat + data->eat_time > data->life_expectency)
+	{
+		pthread_mutex_unlock(&philo->last_eat_mutex);
+		usleep((data->life_expectency -
+					(get_time() - philo->last_eat)) * 1000);
+		return ;
+	}
+	else
+		usleep(data->eat_time * 1000);
+	pthread_mutex_unlock(&philo->last_eat_mutex);
 	pthread_mutex_lock(&philo->nb_meal_mutex);
 	philo->nb_meal++;
 	pthread_mutex_unlock(&philo->nb_meal_mutex);
@@ -81,7 +91,22 @@ bool	philo_eat(t_philo *philo, t_data *data)
 void	philo_sleep(t_data *data, t_philo *philo)
 {
 	print_sleeping(philo);
-	usleep(data->sleep_time * 1000);
+	pthread_mutex_lock(&philo->last_sleep_mutex);
+	// printf("time=%zu, last_sleep=%zu, sleep_time=%zu, life_expectency=%zu\n", get_time(), philo->last_sleep, data->sleep_time, data->life_expectency);
+	if (get_time() - philo->last_sleep + data->sleep_time > data->life_expectency)
+	{
+		pthread_mutex_unlock(&philo->last_sleep_mutex);
+		// printf("rompiche=%zu\n", (data->life_expectency -
+		// 			(get_time() - philo->last_sleep)));
+		usleep((data->life_expectency -
+					(get_time() - philo->last_sleep)) * 1000);
+		return ;
+	}
+	else
+		usleep(data->sleep_time * 1000);
+	philo->last_sleep = get_time();
+	pthread_mutex_unlock(&philo->last_sleep_mutex);
+
 }