Не уверен, но попробуйте так
$('.tn-elem__836009271539945761888').click(function() {
const dataObject = {strchecked: strchecked, bmr: bmr, activityty: activityty, vozrastt: vozrastt, rostt: rostt, vess: vess, vesc: vesc, indmastel: indmastel, stadia: stadia};
$.ajax({
url: "https://fitnespage.000webhostapp.com/gogogo.php",
type : "POST",
data : ("objectData=" + JSON.stringify(dataObject)),
success: function (responseText) {
alert(responseText);
}
});
});
php:
$to = "g1r2e3e4n5-6z7m8@ynedax.ru";
$subject = "Заказ";
$object = json_decode($_POST["objectData"]);
$bbmr = $object['bmr'];
$activityty = $object['activityty'];
$vozrastt = $object['vozrastt'];
$rostt = $object['rostt'];
$vess = $object['vess'];
$vesc = $object['vesc'];
$indmastel = $object['indmastel'];
$stadia = $object['stadia'];
$strcheck = $object['strchecked'];
$message = "Заказ