Please correct me

Today was a really productive day. I' had been studying English for all day. I repeated topics I already knew / studied and started to learn new ones. So I've was doing this until my friend called and offered to take me to the sports field to work out on the crossbar [?] and take a walk afterward. I took him up on his offer, and we agreed on a time. But then it turned out that he had a dinner just before our meeting, so we decided to swap walking and workout. So At first we took a walk and then went to the sports field. It was a great workout; I'm really tired but this is a good fatigue (you know that's the feeling when you understand - it was such a good training). In the end I returned home, took a shower, and went to the bed.

Please correct me

Today was a really productive day. I've been learning English for all day. I repeated already known topics and started to learn new ones. So I've been was doing this until my friend called and offered me to go to the sports ground for a workout on the crossbar and take a walk after this. I took his offer and we agreed on a time. But then it turned out that he had a dinner just before our meeting therefore we decided to swap walking and workout. So at first we took a walk and then went to the sports ground. It was a great workout I'm really tired but this is good fatigue (you know that's the feeling when you understand - it was such a good training). In the end I returned home, took a shower and went to the bed.

Please correct me

Today was a really productive day. I had been learning English all day. I repeated already known topics and started to learn some new ones too. So I had been doing this until my friend called and offered me to go to the sports-ground for a workout on the crossbar and a walk afterwards. I took his offer up and we agreed on a time. But then it turned out that he had a dinner just before our meeting therefore we decided to swap round the walking and workout. So first we walked the walk and then went to the sports ground. It was great workout I'm really tired but this is a good fatigue (you know that's the feeling when you understand - it was such a good training). In the end I returned home, took a shower and went to bed.

Please correct me

Today was a really productive day. I've been learning English for all day. I repeated already known topics and started to learn new ones. So I've been doing this until my friend called and offered me to go to the sports ground for workout on the crossbar and take a walk after this. I took his offer and we agreed on a time. But then it turned out that he had a dinner just before our meeting therefore we decided to swap walking and workout. So at first we took a walk and then went to the sports ground. It was a great workout I'm really tired but this is good fatigue (you know that's the feeling when you understand - it was such a good training). In the end I returned home, took a shower and went to the bed.

9/10

No dangerous mistakes and very low grammatical mistakes. Good effort