diff --git a/awc/CHANGES.md b/awc/CHANGES.md
index b5144b7a2..9dcca804e 100644
--- a/awc/CHANGES.md
+++ b/awc/CHANGES.md
@@ -3,8 +3,10 @@
 ## Unreleased - 2021-xx-xx
 - Rename `Connector::{ssl => openssl}`. [#2503]
 - Improve `Client` instantiation efficiency when using `openssl` by only building connectors once. [#2503]
+- `ClientRequest::send_body` now takes an `impl MessageBody`. [#????]
 
 [#2503]: https://github.com/actix/actix-web/pull/2503
+[#????]: https://github.com/actix/actix-web/pull/????
 
 
 ## 3.0.0-beta.14 - 2021-12-17
diff --git a/awc/src/any_body.rs b/awc/src/any_body.rs
index 2ffeb5074..437216313 100644
--- a/awc/src/any_body.rs
+++ b/awc/src/any_body.rs
@@ -77,10 +77,27 @@ impl<B> AnyBody<B>
 where
     B: MessageBody + 'static,
 {
+    /// Converts a [`MessageBody`] type into the best possible representation.
+    ///
+    /// Checks size for `None` and tries to convert to `Bytes`. Otherwise, uses the `Body` variant.
+    pub fn from_message_body(body: B) -> Self
+    where
+        B: MessageBody,
+    {
+        if matches!(body.size(), BodySize::None) {
+            return Self::None;
+        }
+
+        match body.try_into_bytes() {
+            Ok(body) => Self::Bytes { body },
+            Err(body) => Self::new(body),
+        }
+    }
+
     pub fn into_boxed(self) -> AnyBody {
         match self {
             Self::None => AnyBody::None,
-            Self::Bytes { body: bytes } => AnyBody::Bytes { body: bytes },
+            Self::Bytes { body } => AnyBody::Bytes { body },
             Self::Body { body } => AnyBody::new_boxed(body),
         }
     }
diff --git a/awc/src/frozen.rs b/awc/src/frozen.rs
index cd93a1d60..28aae27f9 100644
--- a/awc/src/frozen.rs
+++ b/awc/src/frozen.rs
@@ -5,13 +5,13 @@ use futures_core::Stream;
 use serde::Serialize;
 
 use actix_http::{
+    body::MessageBody,
     error::HttpError,
     header::{HeaderMap, HeaderName, TryIntoHeaderValue},
     Method, RequestHead, Uri,
 };
 
 use crate::{
-    any_body::AnyBody,
     sender::{RequestSender, SendClientRequest},
     BoxError, ClientConfig,
 };
@@ -46,7 +46,7 @@ impl FrozenClientRequest {
     /// Send a body.
     pub fn send_body<B>(&self, body: B) -> SendClientRequest
     where
-        B: Into<AnyBody>,
+        B: actix_http::body::MessageBody + 'static,
     {
         RequestSender::Rc(self.head.clone(), None).send_body(
             self.addr,
@@ -159,7 +159,7 @@ impl FrozenSendBuilder {
     /// Complete request construction and send a body.
     pub fn send_body<B>(self, body: B) -> SendClientRequest
     where
-        B: Into<AnyBody>,
+        B: MessageBody + 'static,
     {
         if let Some(e) = self.err {
             return e.into();
diff --git a/awc/src/middleware/redirect.rs b/awc/src/middleware/redirect.rs
index 704d2d79d..f644a375b 100644
--- a/awc/src/middleware/redirect.rs
+++ b/awc/src/middleware/redirect.rs
@@ -190,10 +190,7 @@ where
                         let body_new = if is_redirect {
                             // try to reuse body
                             match body {
-                                Some(ref bytes) => AnyBody::Bytes {
-                                    body: bytes.clone(),
-                                },
-                                // TODO: should this be AnyBody::Empty or AnyBody::None.
+                                Some(ref bytes) => AnyBody::from(bytes.clone()),
                                 _ => AnyBody::empty(),
                             }
                         } else {
diff --git a/awc/src/request.rs b/awc/src/request.rs
index 9e37b2755..f457c52da 100644
--- a/awc/src/request.rs
+++ b/awc/src/request.rs
@@ -5,13 +5,13 @@ use futures_core::Stream;
 use serde::Serialize;
 
 use actix_http::{
+    body::MessageBody,
     error::HttpError,
     header::{self, HeaderMap, HeaderValue, TryIntoHeaderPair},
     ConnectionType, Method, RequestHead, Uri, Version,
 };
 
 use crate::{
-    any_body::AnyBody,
     error::{FreezeRequestError, InvalidUrl},
     frozen::FrozenClientRequest,
     sender::{PrepForSendingError, RequestSender, SendClientRequest},
@@ -340,7 +340,7 @@ impl ClientRequest {
     /// Complete request construction and send body.
     pub fn send_body<B>(self, body: B) -> SendClientRequest
     where
-        B: Into<AnyBody>,
+        B: MessageBody + 'static,
     {
         let slf = match self.prep_for_sending() {
             Ok(slf) => slf,
diff --git a/awc/src/sender.rs b/awc/src/sender.rs
index 29c814531..cae9ca363 100644
--- a/awc/src/sender.rs
+++ b/awc/src/sender.rs
@@ -8,7 +8,7 @@ use std::{
 };
 
 use actix_http::{
-    body::BodyStream,
+    body::{BodyStream, MessageBody},
     error::HttpError,
     header::{self, HeaderMap, HeaderName, TryIntoHeaderValue},
     RequestHead, RequestHeadType,
@@ -189,15 +189,17 @@ impl RequestSender {
         body: B,
     ) -> SendClientRequest
     where
-        B: Into<AnyBody>,
+        B: MessageBody + 'static,
     {
         let req = match self {
-            RequestSender::Owned(head) => {
-                ConnectRequest::Client(RequestHeadType::Owned(head), body.into(), addr)
-            }
+            RequestSender::Owned(head) => ConnectRequest::Client(
+                RequestHeadType::Owned(head),
+                AnyBody::from_message_body(body).into_boxed(),
+                addr,
+            ),
             RequestSender::Rc(head, extra_headers) => ConnectRequest::Client(
                 RequestHeadType::Rc(head, extra_headers),
-                body.into(),
+                AnyBody::from_message_body(body).into_boxed(),
                 addr,
             ),
         };
@@ -229,9 +231,7 @@ impl RequestSender {
             response_decompress,
             timeout,
             config,
-            AnyBody::Bytes {
-                body: Bytes::from(body),
-            },
+            AnyBody::copy_from_slice(body.as_bytes()),
         )
     }
 
@@ -260,9 +260,7 @@ impl RequestSender {
             response_decompress,
             timeout,
             config,
-            AnyBody::Bytes {
-                body: Bytes::from(body),
-            },
+            AnyBody::copy_from_slice(body.as_bytes()),
         )
     }