Stamina seems to drain to fast

Questions & Answers
1

Hello, I just recently started using unity and how to code in C# (like less than a day), I was wondering if anyone could help me with an issue I keep having where the stamina seems to drain too fast and I don’t know what seems to be causing it. And if you have any suggestions on how to improve on this please let me know

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class movement2 : MonoBehaviour
{
    public CharacterController controller;

    public float speed = 12f;
    public float gravity = -9.81f;
    public float jumpHeight = 10f;
    
    public bool isSprinting = false;

    public float crouchHeight = 3.4f;
    public bool isCrouching = false;
    public float standingHeight = 3.8f;

    public Transform groundCheck;
    public float groundDistance = 0.4f;
    public LayerMask groundMask;

    private int maxStam = 200;
    private int currentStam;

    private WaitForSeconds regenTick = new WaitForSeconds(1f);
    private Coroutine regen;

    Vector3 velocity;
    bool isGrounded;
    // Start is called before the first frame update
    void Start()
    {
         currentStam = maxStam;
    }

    // Update is called once per frame
    void Update()
    {
        isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

        if(isGrounded && velocity.y <0)
        {
            velocity.y = -2f;
        }
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        Vector3 move = transform.right * x + transform.forward * z;

        if(move.magnitude>1)
                 move/=move.magnitude;

        controller.Move(move * speed * Time.deltaTime);

        if(Input.GetButtonDown("Jump") && isGrounded)
        {
            velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
        }
       
            if(Input.GetKey(KeyCode.LeftShift))
        {
            isSprinting = true;
        }
        else
        {
            isSprinting = false;
        }

        if (isSprinting == true)
        {
                if (currentStam - 1 >=0)
                {
                    currentStam -= 1;
                    speed = 18f;
                    if(regen != null)
                    {
                        StopCoroutine(regen);
                    }
                    regen = StartCoroutine(RegenStamina());
                    Debug.Log(currentStam);
                }
                else
                {
                    Debug.Log("Not Enough Stam Fam!");
                    speed = 8f;
                }
        }
        else
        {
            speed = 8f;
        }
        
       
        
        if(Input.GetKey(KeyCode.LeftControl))
        {
            isCrouching = true;
        }
        else
        {
            isCrouching = false;
        }
        if(isCrouching == true)
        {
            controller.height = crouchHeight;
            speed = 3f;
        }
        else
        {
            controller.height = standingHeight;
        }

        velocity.y += gravity * Time.deltaTime;

        controller.Move(velocity * Time.deltaTime * 2);
    }
     private IEnumerator RegenStamina()
        {
            yield return new WaitForSeconds(4);

            while(currentStam < maxStam)
            {
                currentStam += maxStam / 100;
                yield return regenTick;
                Debug.Log(currentStam);
            }
        }

}
2

Long story short: you using your stamina at update rate…
replace: Input.GetKey with Input.GetKeyDown or make some usage time delay