I don’t see any downside in doing so yeah. You should be able to substitue any exercises with a sandbag.
Although, having different loads available would be best as you can’t really compare a back squat or deadlift with bicep curls for example.
I am no professional, but from a sport amateur perspective, I don’t see any issue with it.
Hi there @TomG
I appreciate the comment. I have started with the sandbag replacement and it is working well so far. Like you mentioned, I have different weights and sizes due to variations etc. I also use a smaller “kettle bell” size sandbag for plate training.
On the app it obviously suggests weights that one has to use, but like most I guess I am using it as a guide and building up my weigh as I go along. - I have also added in resistance bands for the initial build up - there are a few of the “intervals” that start with a lighter weight for build up, and the resistance bands work well for those.