Validations fired before form submit in MVC 5

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MVC5

I have a registration form, whose Register.cshtml file looks like below :

<div class="form-group">
       @Html.LabelFor(m => m.Email, new { @class = "col-md-2 control-label" })
       <div class="col-md-10">
           @Html.TextBoxFor(m => m.Email, new { @class = "form-control" })
           @Html.ValidationMessageFor(m => m.Email, "Please enter email address.", new { @class = "text-danger" })

       </div>
   </div>
   <div class="form-group">
       @Html.LabelFor(m => m.Password, new { @class = "col-md-2 control-label" })
       <div class="col-md-10">
           @Html.PasswordFor(m => m.Password, new { @class = "form-control" })
           @Html.ValidationMessageFor(m => m.Password, "Please enter password.", new { @class = "text-danger" })
       </div>
   </div>

and the Register action methods as below :

[AllowAnonymous]
       [HttpGet]
       public ActionResult Register()
       {
           return View();
       }

       //
       // POST: /Account/Register
       [HttpPost]
       [AllowAnonymous]
       [ValidateAntiForgeryToken]
       public async Task<ActionResult> Register(RegisterViewModel model)
       {
           if (ModelState.IsValid)
           {
              //some code inside
           }

           // If we got this far, something failed, redisplay form
           return View(model);
       }

The validation error messages are fired even before i click on the submit button of the form.
Should i be adding any specific code to control that?