diff --git a/config/constants.py b/config/constants.py
index 2aaa134..93e481d 100644
--- a/config/constants.py
+++ b/config/constants.py
@@ -25,9 +25,9 @@ CELL_SIZE = 20
 RENDER_BUFFER = 50
 
 # Performance settings
-DEFAULT_TPS = 20
+DEFAULT_TPS = 40
 MAX_FPS = 180
-TURBO_MULTIPLIER = 4
+TURBO_MULTIPLIER = 8
 
 # Camera settings
 DEFAULT_CAMERA_SPEED = 700
@@ -44,6 +44,7 @@ SELECTION_THRESHOLD = 3  # pixels
 
 # Simulation settings
 FOOD_SPAWNING = True
+FOOD_OBJECTS_COUNT = 100
 RANDOM_SEED = 0
 
 # Vector visualization settings
@@ -58,7 +59,7 @@ DIRECTION_TIP_SIZE = 3
 MAX_ACCELERATION = 0.1
 MAX_ANGULAR_ACCELERATION = 0.25
 MAX_VELOCITY = 0.5
-MAX_ROTATIONAL_VELOCITY = 6
+MAX_ROTATIONAL_VELOCITY = 3
 
 KEYMAP_LEGEND = [
     ("WASD", "Move camera"),
diff --git a/core/input_handler.py b/core/input_handler.py
index 45a73ca..deccff0 100644
--- a/core/input_handler.py
+++ b/core/input_handler.py
@@ -25,6 +25,7 @@ class InputHandler:
         # Speed control
         self.tps = DEFAULT_TPS
         self.default_tps = DEFAULT_TPS
+        self.sprint_mode = False
 
     def handle_events(self, events):
         """Process all pygame events and return game state."""
@@ -74,6 +75,8 @@ class InputHandler:
             self.tps = self.default_tps * TURBO_MULTIPLIER
         elif event.key == pygame.K_r:
             self.camera.reset_position()
+        elif event.key == pygame.K_RSHIFT:
+            self.sprint_mode = True  # Enter sprint mode
 
         return running
 
@@ -81,6 +84,8 @@ class InputHandler:
         """Handle keyup events."""
         if event.key == pygame.K_LSHIFT:
             self.tps = self.default_tps
+        if event.key == pygame.K_RSHIFT:
+            self.sprint_mode = False  # Exit sprint mode
 
     def _handle_mouse_down(self, event):
         """Handle mouse button down events."""
diff --git a/core/simulation_engine.py b/core/simulation_engine.py
index 13f8342..0791d36 100644
--- a/core/simulation_engine.py
+++ b/core/simulation_engine.py
@@ -39,9 +39,12 @@ class SimulationEngine:
         random.seed(RANDOM_SEED)
 
         if FOOD_SPAWNING:
-            world.add_object(FoodObject(Position(x=random.randint(-100, 100), y=random.randint(-100, 100))))
+            for _ in range(FOOD_OBJECTS_COUNT):
+                x = random.randint(-100, 100)
+                y = random.randint(-100, 100)
+                world.add_object(FoodObject(Position(x=x, y=y)))
 
-        for _ in range(1):
+        for _ in range(20):
             world.add_object(DefaultCell(Position(x=random.randint(-100, 100), y=random.randint(-100, 100)), Rotation(angle=0)))
 
         return world
@@ -60,6 +63,30 @@ class SimulationEngine:
         # Handle events
         self.running = self.input_handler.handle_events(pygame.event.get())
 
+        if self.input_handler.sprint_mode:
+            # Sprint mode: run as many ticks as possible, skip rendering
+            current_time = time.perf_counter()
+            while True:
+                self.input_handler.update_selected_objects()
+                self.world.tick_all()
+                self.tick_counter += 1
+                self.total_ticks += 1
+                # Optionally break after some time to allow event processing
+                if time.perf_counter() - current_time > 0.05:  # ~50ms per batch
+                    break
+            # Update TPS every second
+            if time.perf_counter() - self.last_tps_time >= 1.0:
+                self.actual_tps = self.tick_counter
+                self.tick_counter = 0
+                self.last_tps_time = time.perf_counter()
+            # No rendering or camera update
+
+            self.renderer.clear_screen()
+            self.hud.render_sprint_debug(self.screen, self.actual_tps, self.total_ticks)
+            pygame.display.flip()
+            self.clock.tick(MAX_FPS)
+            return
+
         if not self.input_handler.is_paused:
             current_time = time.perf_counter()
             while current_time - self.last_tick_time >= tick_interval:
diff --git a/ui/hud.py b/ui/hud.py
index a0b31f7..ef7dff7 100644
--- a/ui/hud.py
+++ b/ui/hud.py
@@ -462,3 +462,18 @@ class HUD:
             for surf in tooltip_surfs:
                 screen.blit(surf, (tooltip_rect.left + TOOLTIP_PADDING_X, y))
                 y += surf.get_height() + TOOLTIP_LINE_SPACING
+
+    def render_sprint_debug(self, screen, actual_tps, total_ticks):
+        """Render sprint debug info: header, TPS, and tick count."""
+        header = self.font.render("Sprinting...", True, (255, 200, 0))
+        tps_text = self.font.render(f"TPS: {actual_tps}", True, (255, 255, 255))
+        ticks_text = self.font.render(f"Ticks: {total_ticks}", True, (255, 255, 255))
+
+        y = SCREEN_HEIGHT // 2 - 40
+        header_rect = header.get_rect(center=(SCREEN_WIDTH // 2, y))
+        tps_rect = tps_text.get_rect(center=(SCREEN_WIDTH // 2, y + 40))
+        ticks_rect = ticks_text.get_rect(center=(SCREEN_WIDTH // 2, y + 80))
+
+        screen.blit(header, header_rect)
+        screen.blit(tps_text, tps_rect)
+        screen.blit(ticks_text, ticks_rect)
diff --git a/world/objects.py b/world/objects.py
index 5ad3380..b061af0 100644
--- a/world/objects.py
+++ b/world/objects.py
@@ -250,6 +250,8 @@ class DefaultCell(BaseEntity):
         self.rotational_velocity: int = 0
         self.angular_acceleration: int = 0
 
+        self.energy: int = 1000
+
         self.behavioral_model: CellBrain = CellBrain()
 
         self.max_visual_width: int = 10
@@ -274,6 +276,17 @@ class DefaultCell(BaseEntity):
         :return: Self.
         """
 
+        if self.energy == 0:
+            # too hungry lmao
+            self.flag_for_death()
+            return self
+
+        self.energy -= 1
+
+        if self.tick_count > 2000:
+            # too old lmao
+            self.flag_for_death()
+
         if interactable is None:
             interactable = []
 
@@ -287,14 +300,40 @@ class DefaultCell(BaseEntity):
             food_object = FoodObject(self.position)
 
         angle_between_food = self.calculate_angle_between_food(self.position.get_position(), self.rotation.get_rotation(), food_object.position.get_position())
+        distance_to_food = get_distance_between_objects(self, food_object)
+
+        if distance_to_food < self.max_visual_width and food_objects:
+            self.energy += 100
+            food_object.flag_for_death()
+            return self
+
+        if self.energy >= 1500:
+            # too much energy, split
+            duplicate_x, duplicate_y = self.position.get_position()
+            duplicate_x += random.randint(-self.interaction_radius, self.interaction_radius)
+            duplicate_y += random.randint(-self.interaction_radius, self.interaction_radius)
+
+            duplicate_x_2, duplicate_y_2 = self.position.get_position()
+            duplicate_x_2 += random.randint(-self.interaction_radius, self.interaction_radius)
+            duplicate_y_2 += random.randint(-self.interaction_radius, self.interaction_radius)
+
+            new_cell = DefaultCell(Position(x=int(duplicate_x), y=int(duplicate_y)), Rotation(angle=random.randint(0, 359)))
+            new_cell.set_brain(self.behavioral_model.mutate(1))
+
+            new_cell_2 = DefaultCell(Position(x=int(duplicate_x_2), y=int(duplicate_y_2)), Rotation(angle=random.randint(0, 359)))
+            new_cell_2.set_brain(self.behavioral_model.mutate(1))
+
+            return [new_cell, new_cell_2]
 
         input_data = {
-            "distance": get_distance_between_objects(self, food_object),
+            "distance": distance_to_food,
             "angle": angle_between_food,
         }
 
         output_data = self.behavioral_model.tick(input_data)
 
+        # everything below this point is physics simulation and needs to be extracted to a separate class
+
         # clamp accelerations
         output_data["linear_acceleration"] = max(-MAX_ACCELERATION, min(MAX_ACCELERATION, output_data["linear_acceleration"]))
         output_data["angular_acceleration"] = max(-MAX_ANGULAR_ACCELERATION, min(MAX_ANGULAR_ACCELERATION, output_data["angular_acceleration"]))
@@ -408,4 +447,5 @@ class DefaultCell(BaseEntity):
         position = f"({round(self.position.x, 1)}, {round(self.position.y, 1)})"
         velocity = tuple(round(value, 1) for value in self.velocity)
         acceleration = tuple(round(value, 1) for value in self.acceleration)
-        return f"DefaultCell(position={position}, velocity={velocity}, acceleration={acceleration}"
+        rotation = round(self.rotation.get_rotation(), 1)
+        return f"DefaultCell(position={position}, velocity={velocity}, acceleration={acceleration}, rotation={rotation}, energy={self.energy}, age={self.tick_count})"