diff --git a/.gitignore b/.gitignore
index 13667fb..f316c60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 
 Gemfile.lock
 gemfiles/*.lock
+.idea
diff --git a/CHANGELOG.md b/CHANGELOG.md
index def0efc..37b174d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## HEAD
 
+- Support non-GET requests via REQUEST_METHOD and setting body via REQUEST_BODY
+- Add ability to set Content-Type and Content-Length headers via CONTENT_TYPE and CONTENT_LENGTH env vars (they don't work with HTTP_ variables)
 - Support ruby-statistics 4.x (https://github.com/zombocom/derailed_benchmarks/pull/238, https://github.com/zombocom/derailed_benchmarks/pull/239)
 - Repair tests, support ruby-statistics in ruby < 3.0 (https://github.com/zombocom/derailed_benchmarks/pull/241)
 - Test Rails 7.1 and 7.2 (https://github.com/zombocom/derailed_benchmarks/pull/242)
diff --git a/README.md b/README.md
index 1aff32f..79374b7 100644
--- a/README.md
+++ b/README.md
@@ -575,6 +575,22 @@ $ HTTP_AUTHORIZATION="Basic YWRtaW46c2VjcmV0\n" \
   PATH_TO_HIT=/foo_secret bundle exec derailed exec perf:ips
 ```
 
+The `Content-Type` and `Content-Length` headers are a bit different. To set those, ignore the HTTP_ prefix, use the `CONTENT_TYPE` and `CONTENT_LENGTH` variables.
+
+### Performing non-GET requests
+
+If the endpoint being tested is not a GET request, you can set the `REQUEST_METHOD` variable with the HTTP method you want (e.g. POST, PUT, PATCH, DELETE).
+
+To set the request body, you can use the `REQUEST_BODY`.
+
+```
+$ REQUEST_METHOD=POST \
+  REQUEST_BODY="{\"user\":{\"email\":\"foo@bar.com\",\"password\":\"123456\",\"password_confirmation\":\"123456\"}}" \
+  CONTENT_TYPE="application/json" \
+  PATH_TO_HIT=/users \
+  bundle exec derailed exec perf:test
+```
+
 ### Using a real web server with `USE_SERVER`
 
 All tests are run without a webserver (directly using `Rack::Mock` by default), if you want to use a webserver set `USE_SERVER` to a Rack::Server compliant server, such as `webrick`.
diff --git a/lib/derailed_benchmarks/load_tasks.rb b/lib/derailed_benchmarks/load_tasks.rb
index da15eaf..89c578e 100644
--- a/lib/derailed_benchmarks/load_tasks.rb
+++ b/lib/derailed_benchmarks/load_tasks.rb
@@ -24,6 +24,9 @@
 
     DERAILED_APP = Rails.application
 
+    # Disables CSRF protection because of non-GET requests
+    DERAILED_APP.config.action_controller.allow_forgery_protection = false
+
     if DERAILED_APP.respond_to?(:initialized?)
       DERAILED_APP.initialize! unless DERAILED_APP.initialized?
     else
@@ -77,20 +80,42 @@
     WARM_COUNT  = (ENV['WARM_COUNT'] || 0).to_i
     TEST_COUNT  = (ENV['TEST_COUNT'] || ENV['CNT'] || 1_000).to_i
     PATH_TO_HIT = ENV["PATH_TO_HIT"] || ENV['ENDPOINT'] || "/"
+    REQUEST_METHOD = ENV["REQUEST_METHOD"] || "GET"
+    REQUEST_BODY = ENV["REQUEST_BODY"]
+    puts "Method: #{REQUEST_METHOD}"
     puts "Endpoint: #{ PATH_TO_HIT.inspect }"
 
+    # See https://www.rubydoc.info/github/rack/rack/file/SPEC#The_Environment
+    # All HTTP_ variables are accepted in the Rack environment hash, except HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH.
+    # For those, the HTTP_ prefix has to be removed.
     HTTP_HEADER_PREFIX = "HTTP_".freeze
-    RACK_HTTP_HEADERS = ENV.select { |key| key.start_with?(HTTP_HEADER_PREFIX) }
+    HTTP_HEADER_REGEXP = /^#{HTTP_HEADER_PREFIX}.+|CONTENT_(TYPE|LENGTH)$/
+    RACK_ENV_HASH = ENV.select { |key| key =~ HTTP_HEADER_REGEXP }
 
-    HTTP_HEADERS = RACK_HTTP_HEADERS.keys.inject({}) do |hash, rack_header_name|
+    HTTP_HEADERS = RACK_ENV_HASH.keys.inject({}) do |hash, rack_header_name|
       # e.g. "HTTP_ACCEPT_CHARSET" -> "Accept-Charset"
-      header_name = rack_header_name[HTTP_HEADER_PREFIX.size..-1].split("_").map(&:downcase).map(&:capitalize).join("-")
-      hash[header_name] = RACK_HTTP_HEADERS[rack_header_name]
+      upper_case_header_name =
+        if rack_header_name.start_with?(HTTP_HEADER_PREFIX)
+          rack_header_name[HTTP_HEADER_PREFIX.size..-1]
+        else
+          rack_header_name
+        end
+
+      header_name = upper_case_header_name.split("_").map(&:downcase).map(&:capitalize).join("-")
+
+      hash[header_name] = RACK_ENV_HASH[rack_header_name]
       hash
     end
     puts "HTTP headers: #{HTTP_HEADERS}" unless HTTP_HEADERS.empty?
 
     CURL_HTTP_HEADER_ARGS = HTTP_HEADERS.map { |http_header_name, value| "-H \"#{http_header_name}: #{value}\"" }.join(" ")
+    CURL_BODY_ARG = REQUEST_BODY ? "-d '#{REQUEST_BODY}'" : nil
+
+    if REQUEST_METHOD != "GET" && REQUEST_BODY
+      RACK_ENV_HASH["GATEWAY_INTERFACE"] = "CGI/1.1"
+      RACK_ENV_HASH[:input] = REQUEST_BODY.dup
+      puts "Body: #{REQUEST_BODY}"
+    end
 
     require 'rack/test'
 
@@ -108,7 +133,7 @@
       sleep 1
 
       def call_app(path = File.join("/", PATH_TO_HIT))
-        cmd = "curl #{CURL_HTTP_HEADER_ARGS} 'http://localhost:#{@port}#{path}' -s --fail 2>&1"
+        cmd = "curl -X #{REQUEST_METHOD} #{CURL_HTTP_HEADER_ARGS} #{CURL_BODY_ARG} -s --fail 'http://localhost:#{@port}#{path}' 2>&1"
         response = `#{cmd}`
         unless $?.success?
           STDERR.puts "Couldn't call app."
@@ -126,7 +151,7 @@ def call_app(path = File.join("/", PATH_TO_HIT))
       @app = Rack::MockRequest.new(DERAILED_APP)
 
       def call_app
-        response = @app.get(PATH_TO_HIT, RACK_HTTP_HEADERS)
+        response = @app.request(REQUEST_METHOD, PATH_TO_HIT, RACK_ENV_HASH)
         if response.status != 200
           STDERR.puts "Couldn't call app. Bad request to #{PATH_TO_HIT}! Resulted in #{response.status} status."
           STDERR.puts "\n\n***RESPONSE BODY***\n\n"
diff --git a/test/integration/tasks_test.rb b/test/integration/tasks_test.rb
index 7305fb4..bb980a6 100644
--- a/test/integration/tasks_test.rb
+++ b/test/integration/tasks_test.rb
@@ -134,6 +134,44 @@ def rake(cmd, options = {})
     assert_match (/"Cache-Control"=>"no-cache"/), result
   end
 
+  test 'CONTENT_TYPE' do
+    env = {
+      "REQUEST_METHOD" => "POST",
+      "PATH_TO_HIT" => "users",
+      "CONTENT_TYPE" => "application/json",
+      "REQUEST_BODY" => '{"user":{"email":"foo@bar.com","password":"123456","password_confirmation":"123456"}}',
+      "TEST_COUNT" => "2"
+    }
+
+    result = rake "perf:test", env: env
+    assert_match 'Body: {"user":{"email":"foo@bar.com","password":"123456","password_confirmation":"123456"}}', result
+    assert_match 'HTTP headers: {"Content-Type"=>"application/json"}', result
+
+    env["USE_SERVER"] = "webrick"
+    result = rake "perf:test", env: env
+    assert_match 'Body: {"user":{"email":"foo@bar.com","password":"123456","password_confirmation":"123456"}}', result
+    assert_match 'HTTP headers: {"Content-Type"=>"application/json"}', result
+  end
+
+  test 'REQUEST_METHOD and REQUEST_BODY' do
+    env = {
+      "REQUEST_METHOD" => "POST",
+      "PATH_TO_HIT" => "users",
+      "REQUEST_BODY" => "user%5Bemail%5D=foo%40bar.com&user%5Bpassword%5D=123456&user%5Bpassword_confirmation%5D=123456",
+      "TEST_COUNT" => "2"
+    }
+
+    result = rake "perf:test", env: env
+    assert_match 'Endpoint: "users"', result
+    assert_match 'Method: POST', result
+    assert_match 'Body: user%5Bemail%5D=foo%40bar.com&user%5Bpassword%5D=123456&user%5Bpassword_confirmation%5D=123456', result
+
+    env["USE_SERVER"] = "webrick"
+    result = rake "perf:test", env: env
+    assert_match 'Method: POST', result
+    assert_match 'Body: user%5Bemail%5D=foo%40bar.com&user%5Bpassword%5D=123456&user%5Bpassword_confirmation%5D=123456', result
+  end
+
   test 'USE_SERVER' do
     result = rake "perf:test", env: { "USE_SERVER" => 'webrick', "TEST_COUNT" => "2" }
     assert_match 'Server: "webrick"', result
diff --git a/test/rails_app/app/controllers/users_controller.rb b/test/rails_app/app/controllers/users_controller.rb
new file mode 100644
index 0000000..297eb88
--- /dev/null
+++ b/test/rails_app/app/controllers/users_controller.rb
@@ -0,0 +1,13 @@
+class UsersController < ApplicationController
+  def create
+    User.create!(user_params)
+
+    head :created
+  end
+
+  private
+
+  def user_params
+    params.require(:user).permit(:email, :password, :password_confirmation)
+  end
+end
\ No newline at end of file
diff --git a/test/rails_app/config/environments/development.rb b/test/rails_app/config/environments/development.rb
index 6960cd1..58e4678 100644
--- a/test/rails_app/config/environments/development.rb
+++ b/test/rails_app/config/environments/development.rb
@@ -11,6 +11,8 @@
   # Log error messages when you accidentally call methods on nil.
   config.whiny_nils = true
 
+  config.eager_load = false
+
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
diff --git a/test/rails_app/config/environments/production.rb b/test/rails_app/config/environments/production.rb
index 137f451..7383a2b 100644
--- a/test/rails_app/config/environments/production.rb
+++ b/test/rails_app/config/environments/production.rb
@@ -11,6 +11,8 @@
   config.consider_all_requests_local       = false
   config.action_controller.perform_caching = true
 
+  config.eager_load = true
+
   # Specifies the header that your server uses for sending files
   config.action_dispatch.x_sendfile_header = "X-Sendfile"
 
diff --git a/test/rails_app/config/environments/test.rb b/test/rails_app/config/environments/test.rb
index 5f25e53..82ad679 100644
--- a/test/rails_app/config/environments/test.rb
+++ b/test/rails_app/config/environments/test.rb
@@ -12,6 +12,8 @@
   # Log error messages when you accidentally call methods on nil.
   config.whiny_nils = true
 
+  config.eager_load = false
+
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
diff --git a/test/rails_app/config/routes.rb b/test/rails_app/config/routes.rb
index 256d522..9b004e2 100644
--- a/test/rails_app/config/routes.rb
+++ b/test/rails_app/config/routes.rb
@@ -56,6 +56,7 @@
 
   get "foo", to: "pages#index"
   get "foo_secret", to: "pages#secret"
+  post "users", to: "users#create"
 
   get "authenticated", to: "authenticated#index"