public int startTime;

public int maxTime;

void Update ()
	{
		if(charController.velocity.magnitude > 0 && Input.GetKey(KeyCode.LeftShift))
		{
			startTime = startTime - 1;
			if (startTime == 0)
			{
				startTime = maxTime;
				ag.AddExperience(expToGive);
			}
			staminaSlider.value -= Time.deltaTime / staminaFallRate * staminaFallMult;
			staminaText.text = (int)staminaSlider.value + "/100";
		}
	}